Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 3,309	$ 865
Short-term available-for-sale investments		226
Prepaid and other current assets	602	914
Total Current Assets	3,911	2,005
Property, plant and equipment, at cost:
Property, plant and equipment	112,964	114,496
Less accumulated depreciation and depletion	(66,048)	(65,684)
Net property, plant and equipment	46,916	48,812
Restricted cash	3,964	4,026
Long-term assets held for sale	2,123	2,123
Total Assets	56,914	56,966
Current Liabilities:
Accounts payable	610	3,046
Accrued liabilities	1,981	1,569
Convertible loan net of discount	5,431	6,154
Current portion of asset retirement obligations	121	121
Total Current Liabilities	8,143	10,890
Asset retirement obligations, net of current portion	4,668	4,242
Other long-term liabilities and deferred credits	500	800
Long-term liabilities related to assets held for sale	555	555
Total Liabilities	13,866	16,487
Commitments and Contingencies
Stockholders' Equity:
Common stock, 100,000,000 shares authorized, $.001 par value; Issued shares - 16,675,419 and 4,530,211, respectively Outstanding shares - 16,667,394 and 4,522,186, respectively	17	5
Paid-in capital	280,191	258,096
Accumulated other comprehensive loss		(67)
Accumulated deficit	(236,902)	(217,297)
Less: Treasury stock (8,025 and 8,025 shares, respectively), at cost	(258)	(258)
Total Stockholders' Equity	43,048	40,479
Total Liabilities and Stockholders' Equity	$ 56,914	$ 56,966