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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 419 | $ 113
Accounts receivable from oil and gas sales | 67 | 119
Current portion note receivable | 36 | 206
Total current assets | 522 | 438
Oil and natural gas properties (full cost accounting method) |  |
Proved developed and undeveloped oil and gas properties, net of depletion | 2,721 | 5,608
Property and equipment, net of depreciation |  |
Land, buildings and equipment - oil and gas operations | 661 | 706
Other | 0 | 25
Total property and equipment | 661 | 706
Note receivable | 301 | 401
Total assets | 4,205 | 7,178
Current liabilities |  |
Accounts payable - trade (including $412 and $160 in 2017 and 2016 due to related parties) | 446 | 238
Accrued expenses | 29 | 59
Current portion of long term debt | 81 | 96
Total current liabilities | 556 | 393
Long-term debt |  |
Notes payable less current portion | 243 | 296
Asset retirement obligation | 2,770 | 2,770
Total liabilities | 3,569 | 3,459
Stockholders' equity |  |
Series B convertible preferred stock, $10 par value, liquidation value of $100 authorized 100 shares, issued and outstanding one share | 1 | 1
Common stock, $.01 par value; authorized, 100,000,000 shares; issued and outstanding, 2,036,935 and 1,946,935 shares at December 31, 2017 and 2016 | 21 | 20
Additional paid-in capital | 59,000 | 58,838
Accumulated deficit | (58,386) | (55,140)
Total Stockholder's equity | 636 | 3,719
Total liabilities & stockholders' equity | $ 4,205 | $ 7,178

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