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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands | Common Stock Lexam VG Gold | Common Stock | Warrants | Accumulated Other Comprehensive Income (Loss) | Accumulated Deficit | Flow Through Common Shares | Lexam VG Gold | Total
--- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2014 |  | $ 1,360,668 |  | $ 124 | $ (919,577) |  |  | $ 441,215
Balance (in shares) at Dec. 31, 2014 |  | 300,100 |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |
Stock-based compensation (note 11) |  | $ 1,305 |  |  |  |  |  | 1,305
Return of capital distribution (note 10) |  | (1,503) |  |  |  |  |  | (1,503)
Shares issued for settlement of accounts payable |  | $ 443 |  |  |  |  |  | 443
Shares issued for settlement of accounts payable (in shares) |  | 430 |  |  |  |  |  |
Share repurchase (note 10) |  | $ (1,769) |  |  |  |  |  | (1,769)
Share repurchase (note 10) (in shares) |  | (1,896) |  |  |  |  |  |
Unrealized gain (loss) on available-for-sale securities, net of taxes (note 3) |  |  |  | (949) |  |  |  | (949)
Net (loss) income |  |  |  |  | (20,450) |  |  | (20,450)
Balance at Dec. 31, 2015 |  | $ 1,359,144 |  | (825) | (940,027) |  |  | 418,292
Balance (in shares) at Dec. 31, 2015 |  | 298,634 |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |
Stock-based compensation (note 11) |  | $ 1,039 |  |  |  |  |  | 1,039
Return of capital distribution (note 10) |  | (2,986) |  |  |  |  |  | (2,986)
Exercise of stock options (note 11) |  | $ 3,730 |  |  |  |  |  | $ 3,730
Exercise of stock options (note 11) (in shares) |  | 1,494 |  |  |  |  |  | 1,457,000
Share repurchase (note 10) |  | $ (582) |  |  |  |  |  | $ (582)
Share repurchase (note 10) (in shares) |  | (558) |  |  |  |  |  |
Other-than-temporary impairment on marketable equity securities (note 3) |  |  |  | 882 |  |  |  | 882
Unrealized gain (loss) on available-for-sale securities, net of taxes (note 3) |  |  |  | 1,609 |  |  |  | 1,609
Net (loss) income |  |  |  |  | 21,055 |  |  | 21,055
Balance at Dec. 31, 2016 |  | $ 1,360,345 |  | 1,666 | (918,972) |  |  | 443,039
Balance (in shares) at Dec. 31, 2016 |  | 299,570 |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |
Stock-based compensation (note 11) |  | $ 1,311 |  |  |  |  |  | 1,311
Return of capital distribution (note 10) |  | (3,059) |  |  |  |  |  | (3,059)
Shares issued in connection with the acquisition of Lexam VG Gold (note 10) | $ 38,141 |  |  |  |  |  | $ 38,141 |
Shares issued in connection with the acquisition of Lexam VG Gold (note 10) (in shares) | 12,687 |  |  |  |  |  |  |
Exercise of stock options (note 11) |  | $ 122 |  |  |  |  |  | $ 122
Exercise of stock options (note 11) (in shares) |  | 94 |  |  |  |  |  | 94,000
Share repurchase (note 10) (in shares) |  |  |  |  |  |  |  | 0
Other-than-temporary impairment on marketable equity securities (note 3) |  |  |  | 356 |  |  |  | $ 356
Unrealized gain (loss) on available-for-sale securities, net of taxes (note 3) |  |  |  | 1,818 |  |  |  | 1,818
Reclassification of unrealized gain on marketable securities disposed of during the period, net of taxes (note 3) |  |  |  | (840) |  |  |  | (840)
Shares issued in connection with the equity issuance (note 10) |  | $ 39,397 |  |  |  | $ 7,799 |  |
Shares issued in connection with the equity issuance (note 10) (in shares) |  | 20,700 |  |  |  | 4,000 |  |
Net (loss) income |  |  |  |  | (10,634) |  |  | (10,634)
Balance at Dec. 31, 2017 |  | $ 1,444,056 | $ 3,823 | $ 3,000 | $ (929,606) |  |  | 521,273
Balance (in shares) at Dec. 31, 2017 |  | 337,051 |  |  |  |  |  |
Increase (Decrease) in Shareholders' Equity |  |  |  |  |  |  |  |
Warrants issued in connection with the equity issuance (note 10) |  |  | $ 3,823 |  |  |  |  | $ 3,823

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