Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net (loss) income	$ (1,001)	$ 12,779
Items not involving cash:
Depreciation, depletion and amortization	15,757	8,108
Accretion of asset retirement obligations	1,625	868
Unrealized commodity derivative loss (gain)	499	(8,742)
Warrant derivative gain		(225)
Stock-based compensation expense	1,448	1,133
Investments in affiliates	(77)	(7,734)
Amortization of debt costs	846	966
Interest expense paid-in-kind	2,481
Other	(57)
Net change in:
Accounts receivable	7,619	545
Prepaid expenses, deposits and other current assets	(809)	1,067
Accounts payable, accrued liabilities and firm transportation contract obligations	(9,033)	2,472
Other non-current assets	(442)	(392)
Net cash provided by operating activities	18,856	10,845
Cash flows from investing activities:
Development and acquisition of properties and equipment	(8,028)	(2,995)
Acquisition of oil and gas properties, asset acquisitions (Note 3)		(46,980)
Acquisition of oil and gas properties, business combinations, net of cash received (Note 3)		(20,461)
Distribution from affiliate	50
Proceeds received - disposition of oil and gas properties and other property and equipment	1,408
Net cash used in investing activities	(6,570)	(70,436)
Cash flows from financing activities:
Vested restricted stock and performance units exchanged for tax withholding	(225)	(197)
Proceeds from credit facilities and notes payable	7,000	118,628
Proceeds from preferred shares		5,000
Payments on credit facilities and notes payable	(23,708)	(64,150)
Payments of debt issuance costs	(149)	(718)
(Distributions to) contributions from non-controlling interests, net	(36)	5,114
Net cash (used in) provided by financing activities	(17,118)	63,677
Net (decrease) increase in cash and cash equivalents	(4,832)	4,086
Cash and cash equivalents, beginning of period	5,736	1,650
Cash and cash equivalents, end of period	$ 904	$ 5,736