CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets
Cash and cash equivalents	$ 2,726	$ 2,588
Short-term investments	231	334
Trade receivables	473	380
Inventories, net	281	245
Value added tax receivable, net	185	5
Related party receivable		643
Prepaid expenses and other assets	650	578
Total current assets	4,546	4,773
Property, plant and equipment, net	8,709	9,235
Total assets	13,255	14,008
Current liabilities
Accounts payable and other accrued liabilities	1,400	1,224
Other current liabilities	26	24
Total current liabilities	1,426	1,248
Asset retirement and reclamation liabilities	2,402	2,434
Warrant liability - related party	813	976
Warrant liability	721	922
Warrant liability	1,500
Other long term liabilities	55	66
Total liabilities	5,417	5,646
Equity
Common stock, $.01 par value, 200,000,000 and 100,000,000 shares authorized; 90,031,347 and 89,020,041 shares issued and outstanding, respectively	899	889
Additional paid in capital	496,194	495,455
Accumulated deficit	(489,207)	(488,037)
Accumulated other comprehensive (loss) income	(48)	55
Shareholders' equity	7,838	8,362
Total liabilities and equity	$ 13,255	$ 14,008