Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 70,924	$ 55,645
Receivables	21,986	18,666
Inventory	52,752	55,886
Ore on leach pads	75,111	66,192
Prepaid expenses and other	18,730	14,047
Current assets	239,503	210,436
NON-CURRENT ASSETS
Property, plant and equipment, net	234,133	248,789
Mining properties, net	704,580	711,955
Ore on leach pads, noncurrent	78,605	71,539
Restricted assets	8,636	8,752
Equity and debt securities	15,086	35,646
Receivables	22,978	28,709
Other	57,559	62,810
TOTAL ASSETS	1,361,080	1,378,636
CURRENT LIABILITIES
Accounts payable	58,241	69,176
Accrued liabilities and other	68,457	95,616
Debt	27,176	22,746
Reclamation	3,094	3,114
Current liabilities	156,968	190,652
NON-CURRENT LIABILITIES
Debt	321,443	272,751
Reclamation	137,715	133,417
Deferred tax liabilities	35,266	41,976
Other long-term liabilities	55,831	72,836
Non-current liabilities	550,255	520,980
STOCKHOLDERS' EQUITY
Common stock, par value $0.01 per share; authorized 300,000,000 shares, 243,731,885 issued and outstanding at June 30, 2020 and 241,529,021 at December 31, 2019	2,437	2,415
Additional paid-in capital	3,605,982	3,598,472
Accumulated other comprehensive income (loss)	(7,706)	(136)
Accumulated deficit	(2,946,856)	(2,933,747)
Stockholders' equity	653,857	667,004
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 1,361,080	$ 1,378,636