CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents	$ 20,603	$ 33,222
Accounts receivable:
Trade, net	23,749	25,161
Other receivables, net	1,247	597
Inventory, net	94,220	82,046
Other current assets	5,524	4,332
Total current assets	145,343	145,358
Property, plant, equipment, and mineral properties, net	378,509	346,209
Water rights	19,184	2,311
Long-term parts inventory, net	27,569	30,031
Other assets, net	7,834	1,322
Total Assets	578,439	525,231
Accounts payable:
Trade	9,992	9,107
Related parties		28
Income taxes payable	50	914
Accrued liabilities	13,740	8,717
Accrued employee compensation and benefits	4,464	4,124
Other current liabilities	19,382	11,891
Advances on credit facility	19,817
Current portion of long-term debt	20,000
Total current liabilities	87,445	34,781
Long-term debt, net	29,753	49,642
Asset retirement obligation	22,140	23,125
Operating lease liabilities	4,025	0
Other non-current liabilities	420	420
Total Liabilities	143,783	107,968
Commitments and Contingencies
Common stock, $0.001 par value; 400,000,000 shares authorized; and 129,553,517 and 128,716,595 shares outstanding at December 31, 2019, and 2018, respectively	130	129
Additional paid-in capital	652,963	649,202
Retained deficit	(218,437)	(232,068)
Total Stockholders' Equity	434,656	417,263
Total Liabilities and Stockholders' Equity	$ 578,439	$ 525,231