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Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | $ 250,038 | $ 162,182
Receivables | 69,656 | 60,431
Ore on leach pads | 75,699 | 64,167
Inventory, Net | 67,895 | 106,026
Prepaid expenses and other | 18,563 | 17,981
Current assets | 481,851 | 410,787
Property, plant and equipment, net | 227,738 | 216,796
Mining properties, net | 550,247 | 558,455
Ore on leach pads | 69,954 | 67,231
Restricted assets | 19,294 | 17,597
Equity securities | 11,872 | 4,488
Receivables | 15,140 | 30,951
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 | 0
Other Assets, Noncurrent | 18,552 | 12,604
TOTAL ASSETS | 1,394,648 | 1,318,909
Accounts payable | 58,800 | 53,335
Accrued liabilities and other | 41,250 | 42,743
Debt | 13,014 | 12,039
Royalty obligations | 0 | 4,995
Reclamation | 3,599 | 3,522
Liabilities, Current | 116,663 | 116,634
Debt | 271,766 | 198,857
Royalty obligations | 0 | 4,292
Reclamation | 99,541 | 95,804
Deferred tax liabilities | 75,388 | 74,798
Other long-term liabilities | 53,779 | 60,037
Intercompany Payable Receivable | 0 | 0
Non-current liabilities | 500,474 | 433,788
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 181,441,769 at June 30, 2017 and 180,933,287 at December 31, 2016 | 1,814 | 1,809
Additional paid-in capital | 3,316,407 | 3,314,590
Accumulated deficit | (2,537,716) | (2,545,424)
Accumulated other comprehensive income (loss) | (2,994) | (2,488)
Stockholders' equity | 777,511 | 768,487
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 1,394,648 | 1,318,909
Parent Company [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 103,878 | 58,048
Receivables | 54 | 12
Ore on leach pads | 0 | 0
Inventory, Net | 0 | 0
Prepaid expenses and other | 6,696 | 3,803
Current assets | 110,628 | 61,863
Property, plant and equipment, net | 3,908 | 3,222
Mining properties, net | 4,000 | 0
Ore on leach pads | 0 | 0
Restricted assets | 11,711 | 10,170
Equity securities | 9,930 | 0
Receivables | 0 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 274,908 | 273,056
Other Assets, Noncurrent | 211,384 | 221,381
TOTAL ASSETS | 626,469 | 569,692
Accounts payable | 1,599 | 2,153
Accrued liabilities and other | 5,638 | 12,881
Debt | 0 | 0
Royalty obligations |  | 0
Reclamation | 0 | 0
Liabilities, Current | 7,237 | 15,034
Debt | 244,827 | 175,991
Royalty obligations |  | 0
Reclamation | 0 | 0
Deferred tax liabilities | 5,304 | 13,810
Other long-term liabilities | 2,390 | 1,993
Intercompany Payable Receivable | (410,800) | (405,623)
Non-current liabilities | (158,279) | (213,829)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 181,441,769 at June 30, 2017 and 180,933,287 at December 31, 2016 | 1,814 | 1,809
Additional paid-in capital | 3,316,407 | 3,314,590
Accumulated deficit | (2,537,716) | (2,545,424)
Accumulated other comprehensive income (loss) | (2,994) | (2,488)
Stockholders' equity | 777,511 | 768,487
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 626,469 | 569,692
Guarantor Subsidiaries |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 47,912 | 50,023
Receivables | 13,527 | 6,865
Ore on leach pads | 75,699 | 64,167
Inventory, Net | 35,099 | 49,393
Prepaid expenses and other | 2,366 | 1,459
Current assets | 174,603 | 171,907
Property, plant and equipment, net | 146,826 | 139,885
Mining properties, net | 210,785 | 195,791
Ore on leach pads | 69,954 | 67,231
Restricted assets | 226 | 226
Equity securities | 1,942 | 4,488
Receivables | 0 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 12,858 | 11,650
Other Assets, Noncurrent | 10,186 | 9,263
TOTAL ASSETS | 627,380 | 600,441
Accounts payable | 24,168 | 24,921
Accrued liabilities and other | 12,299 | 13,664
Debt | 7,338 | 6,516
Royalty obligations |  | 4,995
Reclamation | 2,749 | 2,672
Liabilities, Current | 46,554 | 52,768
Debt | 22,163 | 15,214
Royalty obligations |  | 4,292
Reclamation | 77,743 | 75,183
Deferred tax liabilities | 6,137 | 6,179
Other long-term liabilities | 4,758 | 4,750
Intercompany Payable Receivable | 336,771 | 336,813
Non-current liabilities | 447,572 | 442,431
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 181,441,769 at June 30, 2017 and 180,933,287 at December 31, 2016 | 250 | 250
Additional paid-in capital | 182,611 | 181,009
Accumulated deficit | (46,225) | (73,529)
Accumulated other comprehensive income (loss) | (3,382) | (2,488)
Stockholders' equity | 133,254 | 105,242
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 627,380 | 600,441
Non-Guarantor Subsidiaries |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 98,248 | 54,111
Receivables | 56,075 | 53,554
Ore on leach pads | 0 | 0
Inventory, Net | 32,796 | 56,633
Prepaid expenses and other | 9,501 | 12,719
Current assets | 196,620 | 177,017
Property, plant and equipment, net | 77,004 | 73,689
Mining properties, net | 335,462 | 362,664
Ore on leach pads | 0 | 0
Restricted assets | 7,357 | 7,201
Equity securities | 0 | 0
Receivables | 15,140 | 30,951
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (861) | 0
Other Assets, Noncurrent | 8,366 | 3,344
TOTAL ASSETS | 639,088 | 654,866
Accounts payable | 33,033 | 26,261
Accrued liabilities and other | 23,313 | 16,198
Debt | 5,676 | 5,523
Royalty obligations |  | 0
Reclamation | 850 | 850
Liabilities, Current | 62,872 | 48,832
Debt | 216,160 | 229,036
Royalty obligations |  | 0
Reclamation | 21,798 | 20,621
Deferred tax liabilities | 63,947 | 54,809
Other long-term liabilities | 46,631 | 53,294
Intercompany Payable Receivable | 74,029 | 68,810
Non-current liabilities | 422,565 | 426,570
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 181,441,769 at June 30, 2017 and 180,933,287 at December 31, 2016 | 193,175 | 197,913
Additional paid-in capital | 1,809,559 | 1,864,261
Accumulated deficit | (1,849,083) | (1,882,710)
Accumulated other comprehensive income (loss) | 0 | 0
Stockholders' equity | 153,651 | 179,464
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 639,088 | 654,866
Eliminations |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 0 | 0
Receivables | 0 | 0
Ore on leach pads | 0 | 0
Inventory, Net | 0 | 0
Prepaid expenses and other | 0 | 0
Current assets | 0 | 0
Property, plant and equipment, net | 0 | 0
Mining properties, net | 0 | 0
Ore on leach pads | 0 | 0
Restricted assets | 0 | 0
Equity securities | 0 | 0
Receivables | 0 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (286,905) | (284,706)
Other Assets, Noncurrent | (211,384) | (221,384)
TOTAL ASSETS | (498,289) | (506,090)
Accounts payable | 0 | 0
Accrued liabilities and other | 0 | 0
Debt | 0 | 0
Royalty obligations |  | 0
Reclamation | 0 | 0
Liabilities, Current | 0 | 0
Debt | (211,384) | (221,384)
Royalty obligations |  | 0
Reclamation | 0 | 0
Deferred tax liabilities | 0 | 0
Other long-term liabilities | 0 | 0
Intercompany Payable Receivable | 0 | 0
Non-current liabilities | (211,384) | (221,384)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 181,441,769 at June 30, 2017 and 180,933,287 at December 31, 2016 | (193,425) | (198,163)
Additional paid-in capital | (1,992,170) | (2,045,270)
Accumulated deficit | 1,895,308 | 1,956,239
Accumulated other comprehensive income (loss) | 3,382 | 2,488
Stockholders' equity | (286,905) | (284,706)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ (498,289) | $ (506,090)

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