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v3.19.1

Consolidated Statements of Changes in Equity - USD ($) $ in Thousands | Total | Common Stock | Deficit | Accumulated other comprehensive income | Total shareholders' equity | Non-controlling interests | At The Market Sale Of Stock | At The Market Sale Of Stock Common Stock
--- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning Balance (in shares) at Dec. 31, 2015 |  | 46,519,132 |  |  |  |  |  |
Beginning Balance at Dec. 31, 2015 | $ 139,487 | $ 373,934 | $ (242,108) | $ 3,505 | $ 135,331 | $ 4,156 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net loss | (39,864) |  | (39,413) |  | (39,413) | (451) |  |
Other comprehensive income | $ (197) |  |  | (197) | (197) |  |  |
Shares issued for exercise of stock options (in shares) | 8,369 | 8,369 |  |  |  |  |  |
Shares issued for consulting services | $ 18 | $ 18 |  |  | 18 |  |  |
Shares issued for exercise of share purchase warrants (in shares) | 0 | 138,608 |  |  |  |  |  |
Shares issued for exercise of share purchase warrants | $ 0 | $ 0 |  |  | 0 |  |  |
Share-based compensation |  | $ 2,657 |  |  | 2,657 |  |  |
Shares issued in connection with the acquisition of Uranerz Energy Corporation (in shares) |  | 200,225 |  |  |  |  |  |
Shares issued in connection with the acquisition of Uranerz Energy Corporation | 539 | $ 539 |  |  | 539 |  |  |
Options issued in connection with the acquisition of Uranerz Energy Corporation (in shares) |  | 13,368,750 |  |  |  |  |  |
Options issued in connection with the acquisition of Uranerz Energy Corporation | 22,980 | $ 22,980 |  |  | 22,980 |  |  |
Stock Issuance Costs | 2,330 | $ 2,330 |  |  | 2,330 |  |  |
Sale of stock consideration received |  |  |  |  |  |  | $ 540 |
Share issued for property acquisitions (in shares) |  | 4,551,284 |  |  |  |  |  |
Share issued for property acquisitions | $ 2,679 | $ 2,679 |  |  | 2,679 |  |  |
Shares issued for the vesting of restricted stock units (in shares) | 196,242 |  |  |  |  |  |  |
Share issuance cost | $ (11,378) | $ (11,378) |  |  | (11,378) |  |  |
Contributions attributable to non-controlling interest | $ 37 |  |  |  |  | 37 |  |
Shares issued for acquisition of 40% Roca Honda (in shares) |  | 1,212,173 |  |  |  |  |  |
Shares issued for consulting services (in shares) | 0 | 206,612 |  |  |  |  |  |
Shares issued for consulting services | $ 479 | $ 479 |  |  | 479 |  |  |
Stock Issued For Exercise Of Warrants | 0 |  |  |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2016 |  | 66,205,153 |  |  |  |  |  |
Ending Balance at Dec. 31, 2016 | $ 137,863 | $ 412,334 | (281,521) | 3,308 | 134,121 | 3,742 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Net loss | (27,990) |  | (27,766) |  | (27,766) | (224) |  |
Other comprehensive income | $ (1,019) |  |  | (1,019) | (1,019) |  |  |
Shares issued for exercise of stock options (in shares) | 0 | 206,612 |  |  |  |  |  |
Shares issued for consulting services | $ 370 | $ 370 |  |  | 370 |  |  |
Shares issued for exercise of share purchase warrants (in shares) | 0 |  |  |  |  |  |  |
Share-based compensation | $ 3,525 | 3,525 |  |  | 3,525 |  |  |
Stock Issuance Costs | (394) | $ (394) |  |  | (394) |  |  |
Shares issued for cash by at-the-market offering (in shares) |  |  |  |  |  |  |  | 7,202,479
Sale of stock consideration received |  |  |  |  |  |  | 14,550 |
Shares issued for cash by at-the-market offering | $ 14,548 |  |  |  | 14,548 |  |  |
Shares issued for the vesting of restricted stock units (in shares) | 831,393 |  |  |  |  |  |  |
Contributions attributable to non-controlling interest | $ 365 |  |  |  |  | 365 |  |
Shares issued for public offering (in shares) |  | 752,580 |  |  |  |  |  |
Shares issued for the vesting of restricted stock units | $ 0 | $ 0 |  |  | 0 |  |  |
Shares issued for consulting services (in shares) | 0 |  |  |  |  |  |  |
Shares issued for consulting services | $ 370 |  |  |  |  |  |  |
Stock Issued For Exercise Of Warrants | 0 |  |  |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2017 |  | 74,366,824 |  |  |  |  |  |
Ending Balance at Dec. 31, 2017 | $ 127,268 | $ 430,383 | (309,287) | 2,289 | 123,385 | 3,883 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Adjusted balance | 129,742 | 430,383 | (306,813) | 2,289 | 125,859 | 3,883 |  |
Net loss | (25,362) |  | (25,245) |  | (25,245) | (117) |  |
Other comprehensive income | $ 1,554 |  |  | 1,554 | 1,554 |  |  |
Shares issued for exercise of stock options (in shares) | 355,092 |  |  |  |  |  |  |
Shares issued for consulting services | $ 764 | $ 764 |  |  | 764 |  |  |
Shares issued for exercise of share purchase warrants (in shares) | 323 | 2,409 |  |  |  |  |  |
Shares issued for exercise of share purchase warrants | $ 8 | $ 8 |  |  | 8 |  |  |
Share-based compensation | 2,762 | 2,762 |  |  | 2,762 |  |  |
Stock Issuance Costs | (922) | $ (922) |  |  | (922) |  |  |
Shares Issued for Consulting Services |  | 247,485 |  |  |  |  |  |
Adjustments to Additional Paid-in-Capital, Shares Issued For Consulting Services | 569 | $ 569 |  |  | 569 |  |  |
Sale of stock consideration received |  |  |  |  |  |  | $ 32,190 |
Shares issued for cash by at-the-market offering | 32,192 |  |  |  | 32,192 |  |  |
Share issued for property acquisitions (in shares) |  | 1,102,840 |  |  |  |  |  |
Share issued for property acquisitions | $ 3,739 | $ 3,739 |  |  | 3,739 |  |  |
Shares issued for the vesting of restricted stock units (in shares) | 829,610 | 899,192 |  |  |  |  |  |
Shares issued for public offering (in shares) |  | 355,092 |  |  |  |  |  |
Shares issued for the vesting of restricted stock units | $ 0 | $ 0 |  |  | 0 |  |  |
Shares issued for consulting services (in shares) | 122,854 | 0 |  |  |  |  |  |
Shares issued for consulting services | $ 569 |  |  |  |  |  |  |
Stock Issued During Period, Value, Cash Payment for Tax Withholding | $ (914) | $ (914) |  |  | (914) |  |  |
Stock Issued For Exercise Of Warrants | 44,185 | 187,970 |  |  |  |  |  |
Ending Balance (in shares) at Dec. 31, 2018 |  | 91,445,066 |  |  |  |  |  |
Ending Balance at Dec. 31, 2018 | $ 144,854 | $ 469,303 | $ (332,058) | $ 3,843 | 141,088 | $ 3,766 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |
Adjustments to Additional Paid in Capital, Warrant Issued | $ 722 | $ 722 |  |  | $ 722 |  |  |

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