CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 2,065	$ 2,588
Short-term investments	281	334
Trade receivables	445	380
Inventories	269	245
Value added tax receivable, net	5	5
Related party receivable	746	643
Prepaid expenses and other assets	551	578
Total current assets	4,362	4,773
Property, plant and equipment, net	8,892	9,235
Total assets	13,254	14,008
Current liabilities
Accounts payable and other accrued liabilities	1,190	1,224
Other current liabilities	24	24
Total current liabilities	1,214	1,248
Asset retirement and reclamation liabilities	2,358	2,434
Warrant liability - related party	1,025	976
Warrant liability	935	922
Other long term liabilities	61	66
Total liabilities	5,593	5,646
Equity
Common stock, $.01 par value, 200,000,000 and 100,000,000 shares authorized; 89,658,910 and 89,020,041 shares issued and outstanding, respectively	896	889
Additional paid in capital	495,934	495,455
Accumulated deficit	(489,172)	(488,037)
Accumulated other comprehensive income	3	55
Shareholders' equity	7,661	8,362
Total liabilities and equity	$ 13,254	$ 14,008