Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS
Cash and cash equivalents	$ 222,517	$ 200,714
Receivables	67,662	85,992
Inventory	89,761	81,711
Ore on leach pads	70,446	67,329
Prepaid expenses and other	17,125	10,942
Current assets	467,511	446,688
NON-CURRENT ASSETS
Property, plant and equipment, net	217,401	195,999
Mining properties, net	552,054	589,219
Ore on leach pads, noncurrent	63,034	44,582
Restricted assets	17,740	11,633
Equity securities	6,208	2,766
Receivables	32,427	24,768
Deferred tax assets	1,854	1,942
Other	12,713	14,892
TOTAL ASSETS	1,370,942	1,332,489
CURRENT LIABILITIES
Accounts payable	49,972	48,732
Accrued liabilities and other	43,569	53,953
Debt	12,512	10,431
Royalty obligations	5,722	24,893
Reclamation	1,432	2,071
Current liabilities	113,207	140,080
NON-CURRENT LIABILITIES
Debt	389,233	479,979
Royalty obligations	6,556	4,864
Reclamation	87,277	83,197
Deferred tax liabilities	81,484	147,132
Other long-term liabilities	60,854	55,761
Non-current liabilities	625,404	770,933
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, issued and outstanding 167,565,649 at September 30, 2016 and 151,339,136 at December 31, 2015	1,676	1,513
Additional paid-in capital	3,169,631	3,024,461
Accumulated other comprehensive income (loss)	(1,860)	(3,722)
Accumulated deficit	(2,537,116)	(2,600,776)
Stockholders' equity	632,331	421,476
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,370,942	$ 1,332,489