Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current
Cash and cash equivalents	$ 185	$ 76
Accounts receivable, less allowance for doubtful accounts of $14	608	490
Accounts receivable - related party, less allowance for doubtful accounts of $159
Inventory	541	627
Other current assets	164	421
Total current assets	1,498	1,614
Loan fees, net	13	24
Oil and gas properties, net (full cost accounting method)	4,720	5,225
Manufactured Methane facilities, net	1,497	1,559
Other property and equipment, net	135	140
Deferred tax asset	242
Total assets	8,105	8,562
Current liabilities
Accounts payable - trade	208	303
Accounts payable - other	159	159
Accrued liabilities	203	274
Current maturities of long-term debt	41	55
Total current liabilities	611	791
Asset retirement obligation	2,270	2,046
Long term debt, less current maturities	49	2,447
Total liabilities	2,930	5,284
Commitments and contingencies (Note 9)
Stockholders' equity
Series A Preferred stock, $0.0001 par value, 10,000 shares designated; 0 shares issued and outstanding
Common stock, $.001 par value, authorized 100,000,000 shares, 10,619,924 and 6,097,723 shares issued and outstanding	11	6
Additional paid-in capital	58,253	55,787
Accumulated deficit	(53,089)	(52,515)
Total stockholders' equity	5,175	3,278
Total liabilities and stockholders' equity	$ 8,105	$ 8,562