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Supplemental Guarantor Information Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | $ 159,643 | $ 192,032
Receivables | 35,864 | 19,069
Ore on leach pads | 75,584 | 73,752
Inventory, Net | 61,723 | 58,230
Prepaid expenses and other | 18,203 | 15,053
Disposal Group, Including Discontinued Operation, Assets, Current | 0 | 91,421
Current assets | 351,017 | 449,557
Property, plant and equipment, net | 266,157 | 254,737
Mining properties, net | 843,821 | 829,569
Ore on leach pads | 67,430 | 65,393
Restricted assets | 22,116 | 20,847
Equity and debt securities | 37,317 | 34,837
Receivables | 55,428 | 28,750
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 0 | 0
Other Assets, Noncurrent | 18,649 | 17,485
TOTAL ASSETS | 1,661,935 | 1,701,175
Accounts payable | 44,864 | 48,592
Accrued liabilities and other | 105,149 | 94,930
Debt | 17,040 | 30,753
Reclamation | 3,777 | 3,777
Disposal Group, Including Discontinued Operation, Liabilities, Current | 0 | 50,677
Liabilities, Current | 170,830 | 228,729
Debt | 396,984 | 380,569
Reclamation | 119,154 | 117,055
Deferred tax liabilities | 105,224 | 105,148
Other long-term liabilities | 55,432 | 54,697
Intercompany Payable Receivable | 0 | 0
Non-current liabilities | 676,794 | 657,469
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 186,176,237 issued and outstanding at March 31, 2018 and 185,637,724 at December 31, 2017 | 1,862 | 1,856
Additional paid-in capital | 3,355,710 | 3,357,345
Accumulated deficit | (2,542,898) | (2,546,743)
Accumulated other comprehensive income (loss) | (363) | 2,519
Stockholders' equity | 814,311 | 814,977
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 1,661,935 | 1,701,175
Accrued Income Taxes, Current | 36,642 | 25,788
Interest Payable, Current | 5,594 | 1,513
Parent Company [Member] |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 22,111 | 44,662
Receivables | 15,895 | 137
Ore on leach pads | 0 | 0
Inventory, Net | 0 | 0
Prepaid expenses and other | 8,892 | 7,824
Disposal Group, Including Discontinued Operation, Assets, Current |  | 0
Current assets | 46,898 | 52,623
Property, plant and equipment, net | 3,141 | 4,007
Mining properties, net | 6,980 | 0
Ore on leach pads | 0 | 0
Restricted assets | 14,352 | 13,251
Equity and debt securities | 36,772 | 33,569
Receivables | 24,047 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 423,448 | 422,074
Other Assets, Noncurrent | 317,146 | 320,335
TOTAL ASSETS | 872,784 | 845,859
Accounts payable | 3,419 | 3,607
Accrued liabilities and other | 16,643 | 13,205
Debt | 0 | 0
Reclamation | 0 | 0
Disposal Group, Including Discontinued Operation, Liabilities, Current |  | 0
Liabilities, Current | 20,062 | 16,812
Debt | 360,280 | 345,088
Reclamation | 0 | 0
Deferred tax liabilities | 2,641 | 4,110
Other long-term liabilities | 2,602 | 2,311
Intercompany Payable Receivable | (327,111) | (337,439)
Non-current liabilities | 38,412 | 14,070
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 186,176,237 issued and outstanding at March 31, 2018 and 185,637,724 at December 31, 2017 | 1,862 | 1,856
Additional paid-in capital | 3,355,710 | 3,357,345
Accumulated deficit | (2,542,899) | (2,546,743)
Accumulated other comprehensive income (loss) | (363) | 2,519
Stockholders' equity | 814,310 | 814,977
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 872,784 | 845,859
Guarantor Subsidiaries |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 30,603 | 52,239
Receivables | 5,084 | 7,922
Ore on leach pads | 75,584 | 73,752
Inventory, Net | 31,512 | 29,769
Prepaid expenses and other | 3,193 | 2,816
Disposal Group, Including Discontinued Operation, Assets, Current |  | 0
Current assets | 145,976 | 166,498
Property, plant and equipment, net | 165,578 | 161,487
Mining properties, net | 219,000 | 216,281
Ore on leach pads | 67,430 | 65,393
Restricted assets | 227 | 227
Equity and debt securities | 545 | 1,268
Receivables | 0 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 332 | 223
Other Assets, Noncurrent | 11,820 | 11,040
TOTAL ASSETS | 610,908 | 622,417
Accounts payable | 21,634 | 24,534
Accrued liabilities and other | 12,059 | 19,262
Debt | 9,977 | 9,215
Reclamation | 2,313 | 2,313
Disposal Group, Including Discontinued Operation, Liabilities, Current |  | 0
Liabilities, Current | 45,983 | 55,324
Debt | 31,116 | 28,313
Reclamation | 83,392 | 82,021
Deferred tax liabilities | 4,978 | 5,127
Other long-term liabilities | 2,751 | 3,063
Intercompany Payable Receivable | 307,016 | 317,759
Non-current liabilities | 429,253 | 436,283
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 186,176,237 issued and outstanding at March 31, 2018 and 185,637,724 at December 31, 2017 | 19,630 | 19,630
Additional paid-in capital | 145,024 | 149,194
Accumulated deficit | (28,982) | (34,551)
Accumulated other comprehensive income (loss) | 0 | (3,463)
Stockholders' equity | 135,672 | 130,810
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 610,908 | 622,417
Non-Guarantor Subsidiaries |  |
Condensed Financial Statements, Captions [Line Items] |  |
Cash and cash equivalents | 106,929 | 95,131
Receivables | 14,885 | 11,010
Ore on leach pads | 0 | 0
Inventory, Net | 30,211 | 28,461
Prepaid expenses and other | 6,118 | 4,413
Disposal Group, Including Discontinued Operation, Assets, Current |  | 91,421
Current assets | 158,143 | 230,436
Property, plant and equipment, net | 97,438 | 89,243
Mining properties, net | 617,841 | 613,288
Ore on leach pads | 0 | 0
Restricted assets | 7,537 | 7,369
Equity and debt securities | 0 | 0
Receivables | 31,381 | 28,750
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | 694 | (18)
Other Assets, Noncurrent | 3,431 | 2,854
TOTAL ASSETS | 916,465 | 971,922
Accounts payable | 19,811 | 20,451
Accrued liabilities and other | 76,447 | 62,463
Debt | 7,063 | 21,538
Reclamation | 1,464 | 1,464
Disposal Group, Including Discontinued Operation, Liabilities, Current |  | 50,677
Liabilities, Current | 104,785 | 156,593
Debt | 319,336 | 323,912
Reclamation | 35,762 | 35,034
Deferred tax liabilities | 97,605 | 95,911
Other long-term liabilities | 50,079 | 49,323
Intercompany Payable Receivable | 20,095 | 19,680
Non-current liabilities | 522,877 | 523,860
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 186,176,237 issued and outstanding at March 31, 2018 and 185,637,724 at December 31, 2017 | 195,020 | 195,020
Additional paid-in capital | 1,882,610 | 1,885,046
Accumulated deficit | (1,788,827) | (1,788,597)
Accumulated other comprehensive income (loss) | 0 | 0
Stockholders' equity | 288,803 | 291,469
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | 916,465 | 971,922
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
Disposal Group, Including Discontinued Operation, Assets, Current |  | 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 and debt securities | 0 | 0
Receivables | 0 | 0
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | (424,474) | (422,279)
Other Assets, Noncurrent | (313,748) | (316,744)
TOTAL ASSETS | (738,222) | (739,023)
Accounts payable | 0 | 0
Accrued liabilities and other | 0 | 0
Debt | 0 | 0
Reclamation | 0 | 0
Disposal Group, Including Discontinued Operation, Liabilities, Current |  | 0
Liabilities, Current | 0 | 0
Debt | (313,748) | (316,744)
Reclamation | 0 | 0
Deferred tax liabilities | 0 | 0
Other long-term liabilities | 0 | 0
Intercompany Payable Receivable | 0 | 0
Non-current liabilities | (313,748) | (316,744)
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 186,176,237 issued and outstanding at March 31, 2018 and 185,637,724 at December 31, 2017 | (214,650) | (214,650)
Additional paid-in capital | (2,027,634) | (2,034,240)
Accumulated deficit | 1,817,810 | 1,823,148
Accumulated other comprehensive income (loss) | 0 | 3,463
Stockholders' equity | (424,474) | (422,279)
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY | $ (738,222) | $ (739,023)

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