Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net loss	$ (9,479)	$ (2,834)
Items not involving cash:
Depreciation, depletion and amortization	1,332	1,952
Accretion of asset retirement obligations	105	95
Unrealized commodity derivative loss	823	779
Impairment of oil and gas properties	4,299
Stock-based compensation expense	2,037	1,071
Equity investment loss (income)	10	(6)
Other	(8)	(12)
Net change in:
Accounts receivable	43	1,680
Prepaid expenses, deposits and other current assets	27	(51)
Accounts payable, accrued liabilities and firm transportation obligations	118	(1,795)
Net cash (used in) provided by operating activities	(693)	879
Cash flows from investing activities:
Development and acquisition of properties and equipment	(328)	(2,648)
Proceeds from sale of oil and gas properties and other assets	8	68
Equity investment distribution	275
Other long-term assets	57	459
Net cash provided by (used in) investing activities	12	(2,121)
Cash flows from financing activities:
Proceeds from notes payable	707	1,800
Payments on notes payable	(200)	(600)
Purchase of common stock		(244)
Distributions to non-controlling interests	(3)	(79)
Net cash provided by financing activities	504	877
Net decrease in cash and cash equivalents	(177)	(365)
Cash and cash equivalents, beginning of period	305	1,132
Cash and cash equivalents, end of period	$ 128	$ 767