Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 104,746	$ 192,032
Receivables	30,480	19,069
Inventory	62,569	58,230
Ore on leach pads	77,515	73,752
Prepaid expenses and other	12,167	15,053
Assets held for sale	0	91,421
Current assets	287,477	449,557
NON-CURRENT ASSETS
Property, plant and equipment, net	285,871	254,737
Mining properties, net	865,043	829,569
Ore on leach pads, noncurrent	67,420	65,393
Restricted assets	21,361	20,847
Equity and debt securities	24,232	34,837
Receivables	28,035	28,750
Other	18,938	17,485
TOTAL ASSETS	1,598,377	1,701,175
CURRENT LIABILITIES
Accounts payable	55,132	48,592
Accrued liabilities and other	65,400	94,930
Debt	22,696	30,753
Reclamation	3,777	3,777
Liabilities held for sale	0	50,677
Current liabilities	147,005	228,729
NON-CURRENT LIABILITIES
Debt	406,494	380,569
Reclamation	122,977	117,055
Deferred tax liabilities	98,891	105,148
Other long-term liabilities	55,227	54,697
Non-current liabilities	683,589	657,469
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 187,026,334 issued and outstanding at September 30, 2018 and 185,637,724 at December 31, 2017	1,870	1,856
Additional paid-in capital	3,359,183	3,357,345
Accumulated other comprehensive income (loss)	(258)	2,519
Accumulated deficit	(2,593,012)	(2,546,743)
Stockholders' equity	767,783	814,977
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,598,377	$ 1,701,175