Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS
Cash and cash equivalents	$ 123,539	$ 192,032
Receivables	40,759	19,069
Inventory	62,154	58,230
Ore on leach pads	75,261	73,752
Prepaid expenses and other	11,925	15,053
Assets held for sale	0	91,421
Current assets	313,638	449,557
NON-CURRENT ASSETS
Property, plant and equipment, net	273,337	254,737
Mining properties, net	861,379	829,569
Ore on leach pads, noncurrent	70,043	65,393
Restricted assets	21,635	20,847
Equity and debt securities	23,804	34,837
Receivables	53,046	28,750
Other	19,022	17,485
TOTAL ASSETS	1,635,904	1,701,175
CURRENT LIABILITIES
Accounts payable	53,428	48,592
Accrued liabilities and other	61,664	94,930
Debt	21,745	30,753
Reclamation	3,777	3,777
Liabilities held for sale	0	50,677
Current liabilities	140,614	228,729
NON-CURRENT LIABILITIES
Debt	397,974	380,569
Reclamation	121,264	117,055
Deferred tax liabilities	102,626	105,148
Other long-term liabilities	54,655	54,697
Non-current liabilities	676,519	657,469
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 187,074,029 issued and outstanding at June 30, 2018 and 185,637,724 at December 31, 2017	1,871	1,856
Additional paid-in capital	3,357,318	3,357,345
Accumulated other comprehensive income (loss)	(450)	2,519
Accumulated deficit	(2,539,968)	(2,546,743)
Stockholders' equity	818,771	814,977
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,635,904	$ 1,701,175