Business Segments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Revenues [Abstract]
Oil and gas production revenues	$ 33,548	$ 21,478	$ 59,398	$ 42,641
Other	11	16	54	49
Total revenue	33,559	21,494	59,452	42,690
Expenses:
Lease operating expenses	5,772	6,166	11,664	12,628
Production taxes	2,838	1,911	5,042	3,838
Depreciation, depletion, and amortization	9,242	5,776	16,877	12,285
Asset Impairment Charges	0	1,977	0	1,977
General and administrative	3,117	2,797	5,940	5,327
Net interest	782	1,259	1,390	2,466
Amortization of deferred financing fees	280	343	629	676
Loss on derivative contracts - Realized	1,356	783	2,090	1,708
Loss (gain) on derivative contracts - Unrealized	7,136	(7,485)	8,080	(6,864)
Other	2	14	2	101
Income tax expense	0	87	0	87
Net income	3,034	7,866	7,738	8,461
Segment Assets [Abstract]
Total segment assets	286,874		286,874		223,650
U.S.
Revenues [Abstract]
Oil and gas production revenues	33,181	20,946	58,656	41,504
Other	0	0	0	0
Total revenue	33,181	20,946	58,656	41,504
Expenses:
Lease operating expenses	5,585	5,783	11,230	11,587
Production taxes	2,838	1,906	5,042	3,833
Depreciation, depletion, and amortization	9,044	5,411	16,481	11,625
Asset Impairment Charges		0		0
General and administrative	508	486	1,017	961
Net interest	140	157	278	323
Amortization of deferred financing fees	0	0	0	0
Loss on derivative contracts - Realized	0	0	0	0
Loss (gain) on derivative contracts - Unrealized	0	0	0	0
Other	0	0	0	0
Income tax expense		0		0
Net income	15,066	7,203	24,608	13,175
Segment Assets [Abstract]
Total segment assets	277,407		277,407		213,212
Canada
Revenues [Abstract]
Oil and gas production revenues	367	532	742	1,137
Other	0	0	0	0
Total revenue	367	532	742	1,137
Expenses:
Lease operating expenses	187	383	434	1,041
Production taxes	0	5	0	5
Depreciation, depletion, and amortization	136	302	272	535
Asset Impairment Charges		1,977		1,977
General and administrative	56	186	404	341
Net interest	6	5	12	11
Amortization of deferred financing fees	0	0	0	0
Loss on derivative contracts - Realized	0	0	0	0
Loss (gain) on derivative contracts - Unrealized	0	0	0	0
Other	0	0	0	0
Income tax expense		0		0
Net income	(18)	(2,326)	(380)	(2,773)
Segment Assets [Abstract]
Total segment assets	1,467		1,467		1,640
Corporate
Revenues [Abstract]
Oil and gas production revenues	0	0	0	0
Other	11	16	54	49
Total revenue	11	16	54	49
Expenses:
Lease operating expenses	0	0	0	0
Production taxes	0	0	0	0
Depreciation, depletion, and amortization	62	63	124	125
Asset Impairment Charges		0		0
General and administrative	2,553	2,125	4,519	4,025
Net interest	636	1,097	1,100	2,132
Amortization of deferred financing fees	280	343	629	676
Loss on derivative contracts - Realized	1,356	783	2,090	1,708
Loss (gain) on derivative contracts - Unrealized	7,136	(7,485)	8,080	(6,864)
Other	2	14	2	101
Income tax expense		87		87
Net income	(12,014)	2,989	(16,490)	(1,941)
Segment Assets [Abstract]
Total segment assets	$ 8,000		$ 8,000		$ 8,798