Share Capital - Summary of Weighted-Average Remaining Contractual Life and Weighted-Average Exercise Price Options Outstanding and Options Exercisable on Exercise Prices (Detail)
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3 Months Ended |
12 Months Ended |
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Mar. 31, 2020
shares
$ / shares
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Dec. 31, 2019
shares
$ / shares
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Mar. 31, 2020
shares
$ / shares
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Dec. 31, 2019
shares
$ / shares
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Dec. 31, 2018
shares
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Dec. 31, 2017
shares
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Options Outstanding, Number Outstanding |
1,272,931
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|
1,714,421
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1,272,931
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1,714,421
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| Weighted average remaining contractual life of outstanding share options |
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5 years 3 months 25 days
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| Options Outstanding, Options Exercisable |
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663,853
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663,853
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| Canadian Dollar [Member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Options Outstanding, Number Outstanding |
886,144
|
[1] |
860,379
|
[1] |
886,144
|
[1] |
860,379
|
[1] |
875,433
|
591,609
|
| Weighted average remaining contractual life of outstanding share options |
3 years 11 months 15 days
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|
4 years 4 months 13 days
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|
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| Options Outstanding, Options Exercisable |
513,378
|
|
414,066
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|
513,378
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|
414,066
|
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| Canadian Dollar [Member] | $11.70 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 9.60
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$ 11.70
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| Options Outstanding, Number Outstanding |
1,105
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|
6,667
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|
1,105
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|
6,667
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|
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| Weighted average remaining contractual life of outstanding share options |
6 months 7 days
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|
11 months 8 days
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| Options Outstanding, Options Exercisable |
1,105
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|
6,667
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|
1,105
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|
6,667
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| Canadian Dollar [Member] | $3.28 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 0.66
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$ 3.28
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| Options Outstanding, Number Outstanding |
25,765
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|
31,498
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25,765
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|
31,498
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| Weighted average remaining contractual life of outstanding share options |
6 years 9 months 29 days
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5 years 8 months 1 day
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| Options Outstanding, Options Exercisable |
25,765
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|
31,498
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|
25,765
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|
31,498
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| Canadian Dollar [Member] | $4.50 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 3.28
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$ 4.50
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| Options Outstanding, Number Outstanding |
31,498
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|
18,936
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31,498
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|
18,936
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| Weighted average remaining contractual life of outstanding share options |
5 years 5 months 1 day
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3 years 3 months 10 days
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| Options Outstanding, Options Exercisable |
31,498
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|
18,936
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|
31,498
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18,936
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| Canadian Dollar [Member] | $4.54 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 4.50
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$ 4.54
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| Options Outstanding, Number Outstanding |
18,936
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|
743,122
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18,936
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|
743,122
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| Weighted average remaining contractual life of outstanding share options |
3 years 11 days
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6 years 9 months 3 days
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| Options Outstanding, Options Exercisable |
18,936
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|
296,807
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|
18,936
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|
296,807
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| Canadian Dollar [Member] | $4.80 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 4.54
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$ 4.80
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| Options Outstanding, Number Outstanding |
743,122
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|
3,040
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743,122
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|
3,040
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| Weighted average remaining contractual life of outstanding share options |
3 years 11 months 26 days
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8 months 15 days
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| Options Outstanding, Options Exercisable |
370,354
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|
3,040
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370,354
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|
3,040
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| Canadian Dollar [Member] | $7.49 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 4.80
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$ 7.49
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| Options Outstanding, Number Outstanding |
3,040
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|
5,590
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3,040
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5,590
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| Weighted average remaining contractual life of outstanding share options |
5 months 16 days
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5 years 6 months 7 days
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| Options Outstanding, Options Exercisable |
3,040
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5,590
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3,040
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5,590
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| Canadian Dollar [Member] | $9.00 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 7.49
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$ 9.00
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| Options Outstanding, Number Outstanding |
5,590
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|
11,481
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5,590
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|
11,481
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| Weighted average remaining contractual life of outstanding share options |
5 years 3 months 8 days
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5 years 6 months 7 days
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| Options Outstanding, Options Exercisable |
5,590
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|
11,481
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|
5,590
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11,481
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| Canadian Dollar [Member] | $9.60 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 9.00
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$ 9.60
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| Options Outstanding, Number Outstanding |
11,481
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|
1,105
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|
11,481
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|
1,105
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| Weighted average remaining contractual life of outstanding share options |
5 years 3 months 8 days
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|
9 months 7 days
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| Options Outstanding, Options Exercisable |
11,481
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|
1,105
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|
11,481
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|
1,105
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| Canadian Dollar [Member] | $12.00 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 11.70
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$ 12.00
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| Options Outstanding, Number Outstanding |
6,667
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|
1,948
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|
6,667
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|
1,948
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| Weighted average remaining contractual life of outstanding share options |
8 months 9 days
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|
11 months 4 days
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| Options Outstanding, Options Exercisable |
6,667
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|
1,948
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|
6,667
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|
1,948
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| Canadian Dollar [Member] | $30.00 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 12.00
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$ 30.00
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| Options Outstanding, Number Outstanding |
1,948
|
|
28,260
|
|
1,948
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|
28,260
|
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| Weighted average remaining contractual life of outstanding share options |
8 months 5 days
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1 year 7 months 24 days
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| Options Outstanding, Options Exercisable |
1,948
|
|
28,260
|
|
1,948
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|
28,260
|
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| Canadian Dollar [Member] | $30.60 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 30.00
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$ 30.60
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| Options Outstanding, Number Outstanding |
28,260
|
|
2,096
|
|
28,260
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|
2,096
|
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| Weighted average remaining contractual life of outstanding share options |
1 year 4 months 24 days
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11 months 23 days
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| Options Outstanding, Options Exercisable |
28,260
|
|
2,096
|
|
28,260
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|
2,096
|
|
|
|
| Canadian Dollar [Member] | $32.40 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 30.60
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|
$ 32.40
|
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|
|
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| Options Outstanding, Number Outstanding |
2,096
|
|
810
|
|
2,096
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|
810
|
|
|
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| Weighted average remaining contractual life of outstanding share options |
8 months 23 days
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1 year 29 days
|
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|
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|
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| Options Outstanding, Options Exercisable |
2,096
|
|
810
|
|
2,096
|
|
810
|
|
|
|
| Canadian Dollar [Member] | $45.30 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 32.40
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|
$ 45.30
|
|
|
|
|
|
|
|
| Options Outstanding, Number Outstanding |
810
|
|
560
|
|
810
|
|
560
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
9 months 29 days
|
|
7 months 9 days
|
|
|
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|
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| Options Outstanding, Options Exercisable |
810
|
|
560
|
|
810
|
|
560
|
|
|
|
| Canadian Dollar [Member] | $51.60 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 45.30
|
|
$ 51.60
|
|
|
|
|
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|
|
| Options Outstanding, Number Outstanding |
560
|
|
5,266
|
|
560
|
|
5,266
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
4 months 9 days
|
|
5 months 8 days
|
|
|
|
|
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| Options Outstanding, Options Exercisable |
560
|
|
5,268
|
|
560
|
|
5,268
|
|
|
|
| Canadian Dollar [Member] | $1.55 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
$ 51.60
|
|
|
|
|
|
|
|
|
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| Options Outstanding, Number Outstanding |
5,266
|
|
|
|
5,266
|
|
|
|
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| Weighted average remaining contractual life of outstanding share options |
2 months 8 days
|
|
|
|
|
|
|
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| Options Outstanding, Options Exercisable |
5,268
|
|
|
|
5,268
|
|
|
|
|
|
| US Dollar [Member] |
|
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
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|
|
|
|
|
|
| Options Outstanding, Number Outstanding |
386,787
|
[1] |
854,042
|
[1] |
386,787
|
[1] |
854,042
|
[1] |
50,349
|
|
| Weighted average remaining contractual life of outstanding share options |
4 years 3 months 26 days
|
|
6 years 3 months 10 days
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
763,165
|
|
249,787
|
|
763,165
|
|
249,787
|
|
|
|
| US Dollar [Member] | $3.72 [member] |
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
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| Exercise prices/option | $ / shares |
|
|
|
|
$ 3.40
|
|
$ 3.72
|
|
|
|
| Options Outstanding, Number Outstanding |
294,273
|
|
40,000
|
|
294,273
|
|
40,000
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
6 years 1 month 13 days
|
|
2 years 8 months 8 days
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
197,273
|
|
0
|
|
197,273
|
|
0
|
|
|
|
| US Dollar [Member] | $1.55 [member] |
|
|
|
|
|
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|
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| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
|
|
|
|
|
|
|
| Exercise prices/option | $ / shares |
|
|
|
|
|
|
$ 1.55
|
|
|
|
| Options Outstanding, Number Outstanding |
|
|
50,349
|
|
|
|
50,349
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
|
|
1 year 11 months 19 days
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
|
|
50,349
|
|
|
|
50,349
|
|
|
|
| US Dollar [Member] | $2.20 [member] |
|
|
|
|
|
|
|
|
|
|
| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
|
|
|
|
|
|
|
| Exercise prices/option | $ / shares |
|
|
|
|
$ 1.55
|
|
$ 2.20
|
|
|
|
| Options Outstanding, Number Outstanding |
50,349
|
|
469,420
|
|
50,349
|
|
469,420
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
1 year 8 months 19 days
|
|
6 years 6 months 10 days
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
50,349
|
|
2,165
|
|
50,349
|
|
2,165
|
|
|
|
| US Dollar [Member] | $3.40 [member] |
|
|
|
|
|
|
|
|
|
|
| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
|
|
|
|
|
|
|
| Exercise prices/option | $ / shares |
|
|
|
|
$ 2.20
|
|
$ 3.40
|
|
|
|
| Options Outstanding, Number Outstanding |
2,165
|
|
294,273
|
|
2,165
|
|
294,273
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
2 years 3 months 19 days
|
|
6 years 4 months 13 days
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
2,165
|
|
197,273
|
|
2,165
|
|
197,273
|
|
|
|
| US Dollar [Member] | $3.72 [Member] |
|
|
|
|
|
|
|
|
|
|
| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
|
|
|
|
|
|
|
| Exercise prices/option | $ / shares |
|
|
|
|
$ 3.72
|
|
|
|
|
|
| Options Outstanding, Number Outstanding |
40,000
|
|
|
|
40,000
|
|
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
2 years 5 months 9 days
|
|
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
|
|
|
|
|
|
|
|
|
|
| US Dollar [Member] | Exercise Price [Member] |
|
|
|
|
|
|
|
|
|
|
| Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |
|
|
|
|
|
|
|
|
|
|
| Options Outstanding, Number Outstanding |
386,787
|
|
|
|
386,787
|
|
|
|
|
|
| Weighted average remaining contractual life of outstanding share options |
5 years 1 month 20 days
|
|
|
|
|
|
|
|
|
|
| Options Outstanding, Options Exercisable |
249,787
|
|
|
|
249,787
|
|
|
|
|
|
|
|