Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
CURRENT ASSETS
Cash and cash equivalents	$ 250,038	$ 162,182
Receivables	69,656	60,431
Inventory	67,895	106,026
Ore on leach pads	75,699	64,167
Prepaid expenses and other	18,563	17,981
Current assets	481,851	410,787
NON-CURRENT ASSETS
Property, plant and equipment, net	227,738	216,796
Mining properties, net	550,247	558,455
Ore on leach pads, noncurrent	69,954	67,231
Restricted assets	19,294	17,597
Equity securities	11,872	4,488
Receivables	15,140	30,951
Other	18,552	12,604
TOTAL ASSETS	1,394,648	1,318,909
CURRENT LIABILITIES
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
Current liabilities	116,663	116,634
NON-CURRENT LIABILITIES
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
Non-current liabilities	500,474	433,788
STOCKHOLDERS' EQUITY
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 other comprehensive income (loss)	(2,994)	(2,488)
Accumulated deficit	(2,537,716)	(2,545,424)
Stockholders' equity	777,511	768,487
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,394,648	$ 1,318,909