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Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands | Total | Common Stock | Additional Paid-In Capital | Accumulated Deficit | Accumulated Other Comprehensive Income (Loss) | JDS Silver [Member] | JDS Silver [Member] Common Stock | JDS Silver [Member] Additional Paid-In Capital | Paramount Gold and Silver Corp. | Paramount Gold and Silver Corp. Common Stock | Paramount Gold and Silver Corp. Additional Paid-In Capital
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balances at Dec. 31, 2014 | $ 554,328 | $ 1,034 | $ 2,789,695 | $ (2,233,593) | $ (2,808) |  |  |  |  |  |
Balances, in shares at Dec. 31, 2014 |  | 103,384 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (367,183) |  |  | (367,183) |  |  |  |  |  |  |
Other comprehensive income (loss) | (914) |  |  |  | (914) |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  |  |  |  |  |  |  |  | 32,667 |
Stock Issued During Period, Value, Acquisitions |  |  |  |  |  |  |  |  | $ 188,817 | $ 327 | $ 188,490
Stock Issued During Period, Shares, Extinguishment of Debt |  | 14,365 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Extinguishment of Debt | 38,523 | $ 144 | 38,379 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |  | 923 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 7,905 | $ 8 | 7,897 |  |  |  |  |  |  |  |
Balances at Dec. 31, 2015 | 421,476 | $ 1,513 | 3,024,461 | (2,600,776) | (3,722) |  |  |  |  |  |
Balances, in shares at Dec. 31, 2015 |  | 151,339 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | 55,352 |  |  | 55,352 |  |  |  |  |  |  |
Other comprehensive income (loss) | 1,234 |  |  |  | 1,234 |  |  |  |  |  |
Stock Issued During Period, Shares, Extinguishment of Debt |  | 739 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Extinguishment of Debt | 11,813 | $ 7 | 11,806 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  | 26,944 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues | 269,556 | $ 270 | 269,286 |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |  | 1,911 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 9,056 | $ 19 | 9,037 |  |  |  |  |  |  |  |
Balances at Dec. 31, 2016 | 768,487 | $ 1,809 | 3,314,590 | (2,545,424) | (2,488) |  |  |  |  |  |
Balances, in shares at Dec. 31, 2016 |  | 180,933 |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Net income (loss) | (1,319) |  |  | (1,319) |  |  |  |  |  |  |
Other comprehensive income (loss) | 5,007 |  |  |  | 5,007 |  |  |  |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  |  |  |  |  | 4,192 |  |  |  |
Stock Issued During Period, Value, Acquisitions |  |  |  |  |  | $ 36,007 | $ 42 | $ 35,965 |  |  |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures |  | 513 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures | 6,795 | $ 5 | 6,790 |  |  |  |  |  |  |  |
Balances at Dec. 31, 2017 | $ 814,977 | $ 1,856 | $ 3,357,345 | $ (2,546,743) | $ 2,519 |  |  |  |  |  |
Balances, in shares at Dec. 31, 2017 |  | 185,638 |  |  |  |  |  |  |  |  |

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