Consolidated Statements of Changes in Equity - USD ($)
$ in Thousands |
Issued capital [member] |
Reserve of equity [member] |
Amount recognised in other comprehensive income and accumulated in equity relating to non-current assets or disposal groups held for sale [member] |
Retained earnings [member] |
Total |
| Balance (in shares) at Dec. 31, 2019 |
86,545,847
|
|
|
|
|
| Balance at Dec. 31, 2019 |
$ 399,995
|
$ 17,777
|
$ (1,015)
|
$ (201,510)
|
$ 215,247
|
| Statement Line Items [Line Items] |
|
|
|
|
|
| Stock options exercised (in shares) |
418,294
|
|
|
|
|
| Stock options exercised |
$ 4,565
|
(1,228)
|
0
|
0
|
3,337
|
| Stock options exercised cashless (in shares) |
139,273
|
|
|
|
|
| Stock options exercised cashless |
$ 1,404
|
(1,404)
|
0
|
0
|
0
|
| Restricted and performance share units converted (in shares) |
20,382
|
|
|
|
|
| Restricted and performance share units converted |
$ 819
|
(819)
|
0
|
0
|
0
|
| Deferred share units converted (in shares) |
60,000
|
|
|
|
|
| Deferred share units converted |
$ 557
|
(557)
|
0
|
0
|
0
|
| Share-based payment |
$ 0
|
3,137
|
0
|
0
|
3,137
|
| Issued for cash (in shares) |
7,621,085
|
|
|
|
|
| Issued for cash |
$ 89,164
|
0
|
0
|
0
|
89,164
|
| Issued for property option payment (in shares) |
8,241
|
|
|
|
|
| Issued for property option payment |
$ 100
|
0
|
0
|
0
|
100
|
| Transfer of gain on disposal of equity securities at FVOCI to deficit, net of tax |
0
|
0
|
(1,137)
|
1,137
|
0
|
| Gains (losses) on remeasuring available-for-sale financial assets, before tax |
0
|
0
|
14,493
|
0
|
14,493
|
| NET OF DEFERRED TAX BENEFIT (EXPENSE) |
0
|
0
|
(1,713)
|
0
|
(1,713)
|
| Net (loss) income |
$ 0
|
0
|
0
|
(7,097)
|
(7,097)
|
| Balance (in shares) at Dec. 31, 2020 |
94,813,122
|
|
|
|
|
| Balance at Dec. 31, 2020 |
$ 496,604
|
16,906
|
10,628
|
(207,470)
|
316,668
|
| Statement Line Items [Line Items] |
|
|
|
|
|
| Stock options exercised (in shares) |
75,066
|
|
|
|
|
| Stock options exercised |
$ 1,315
|
(330)
|
0
|
0
|
985
|
| Stock options exercised cashless (in shares) |
25,089
|
|
|
|
|
| Stock options exercised cashless |
$ 177
|
(177)
|
0
|
0
|
0
|
| Restricted and performance share units converted (in shares) |
40,131
|
|
|
|
|
| Restricted and performance share units converted |
$ 826
|
(826)
|
0
|
0
|
0
|
| Deferred share units converted (in shares) |
159,810
|
|
|
|
|
| Deferred share units converted |
$ 1,663
|
(1,663)
|
0
|
0
|
0
|
| Share-based payment |
$ 0
|
4,305
|
0
|
0
|
4,305
|
| Issued for cash (in shares) |
2,691,000
|
|
|
|
|
| Issued for cash |
$ 43,242
|
0
|
0
|
0
|
43,242
|
| Issued for property option payment (in shares) |
5,223
|
|
|
|
|
| Issued for property option payment |
$ 100
|
0
|
0
|
0
|
100
|
| Transfer of gain on disposal of equity securities at FVOCI to deficit, net of tax |
0
|
0
|
(5,026)
|
5,026
|
0
|
| Gains (losses) on remeasuring available-for-sale financial assets, before tax |
0
|
0
|
(4,401)
|
0
|
(4,401)
|
| NET OF DEFERRED TAX BENEFIT (EXPENSE) |
0
|
0
|
597
|
0
|
597
|
| Net (loss) income |
$ 0
|
0
|
0
|
6,025
|
6,025
|
| Balance (in shares) at Dec. 31, 2021 |
97,809,441
|
|
|
|
|
| Balance at Dec. 31, 2021 |
$ 543,927
|
$ 18,215
|
$ 1,798
|
$ (196,419)
|
$ 367,521
|