Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 162,182	$ 200,714
Receivables	60,431	85,992
Inventory	106,026	81,711
Ore on leach pads	64,167	67,329
Prepaid expenses and other	17,981	10,942
Current assets	410,787	446,688
NON-CURRENT ASSETS
Property, plant and equipment, net	216,796	195,999
Mining properties, net	558,455	589,219
Ore on leach pads, noncurrent	67,231	44,582
Restricted assets	17,597	11,633
Equity securities	4,488	2,766
Receivables	30,951	24,768
Deferred tax assets	191	1,942
Other	12,413	14,892
TOTAL ASSETS	1,318,909	1,332,489
CURRENT LIABILITIES
Accounts payable	53,335	52,153
Accrued liabilities and other	42,743	50,532
Debt	12,039	10,431
Royalty obligations	4,995	24,893
Reclamation	3,522	2,071
Current liabilities	116,634	140,080
NON-CURRENT LIABILITIES
Debt	198,857	479,979
Royalty obligations	4,292	4,864
Reclamation	95,804	83,197
Deferred tax liabilities	74,798	147,132
Other long-term liabilities	60,037	55,761
Non-current liabilities	433,788	770,933
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 180,933,287 at December 31, 2016 and 151,339,136 at December 31, 2015	1,809	1,513
Additional paid-in capital	3,314,590	3,024,461
Accumulated other comprehensive income (loss)	(2,488)	(3,722)
Accumulated deficit	(2,545,424)	(2,600,776)
Stockholders' equity	768,487	421,476
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,318,909	$ 1,332,489