Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss	$ (1,417)	$ (404)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation, depletion, amortization and accretion	351	674
Change in fair value of commodity derivative contracts	(137)	(311)
Stock-based compensation and services	610	212
Warrant fair value adjustment	(190)	(520)
Change in fair value of marketable securities	123
Other	12	19
Decrease (increase) in:
Oil and gas sales receivable	(55)	(79)
Other assets	(187)	(138)
Transaction deposit	(124)
Increase (decrease) in:
Oil and gas payables and related party payable	(328)
Accrued compensation and benefits	556	14
Net cash used in operating activities	(786)	(533)
Cash flows from investing activities:
Purchase of property and equipment	(7)	24
Capital expenditures	(70)	(22)
Net cash (used in) provided by investing activities:	(77)	2
Cash flows from financing activities:
Payment on short-term debt	(600)
Repurchase of employee shares to satisfy tax withholding	(206)
Proceeds from issuance of common stock, net	1,150
Net cash provided by financing activities	344
Net decrease in cash and equivalents	(519)	(531)
Cash and cash equivalents, beginning of period	3,277	2,518
Cash and cash equivalents, end of period	2,758	1,987
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