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CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Cash flows from operating activities    
Net income (loss) $ (593) $ 349
Adjustments to reconcile net income to net cash provided by (used in) operating activities    
Depreciation, depletion and amortization 393 593
Write-off (recovery) of affiliate receivable 0 (1,430)
Changes in operating assets and liabilities    
Other current and non-current assets (20) 122
Accounts payable and other liabilities 361 979
Net cash provided by (used) in operating activities 141 613
Cash flows from investing activities    
Investment in oil and gas 0 (204)
Fixed asset additions (45) (107)
Cash portion from the sale of land 0 116
Repayment of loan from affiliate 0 126
Net cash provided by (used in) investing activities (45) (69)
Cash flows from financing activities    
Payment on notes payable (39) (263)
Net cash provided by (used in) financing activities (39) (263)
Net increase (decrease) in cash and cash equivalents 57 281
Cash and cash equivalents at beginning of year 473 300
Cash and cash equivalents at end of year 530 581
Supplemental disclosures of cash flow information:    
Cash paid for interest on notes payable 13 54
Cash paid for principal on notes payable 66 263
Non cash portion of sale of land $ 0 $ 415