Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income	$ 5,305	$ 2,758
Items not involving cash:
Depreciation, depletion and amortization	2,307	2,069
Accretion of asset retirement obligations	87	103
Unrealized derivative (gain) loss	(477)	14
Stock-based compensation expense	1,101	641
Equity investment (income) loss	(7)	77
Net change in:
Accounts receivable	38	1,119
Prepaid expenses, deposits and other current assets	(64)	(35)
Accounts payable, accrued liabilities and firm transportation obligations	576	(2,094)
Due from related parties	0	446
Net cash provided by operating activities	8,866	5,098
Cash flows from investing activities:
Development and acquisition of properties and equipment	(8,855)	(6,140)
Proceeds from disposition of assets	2,800
Equity method distributions		125
Other long-term assets	30	(35)
Net cash used in investing activities	(6,025)	(6,050)
Cash flows from financing activities:
Purchase of common stock	(3,437)	(92)
Proceeds from notes payable	5,200	2,300
Payments on notes payable	(4,100)	(400)
Distributions to non-controlling interests	(233)	(7)
Net cash (used in) provided by financing activities	(2,570)	1,801
Net increase in cash and cash equivalents	271	849
Cash and cash equivalents, beginning of period	243	328
Cash and cash equivalents, end of period	$ 514	$ 1,177