CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating revenues
Oil and gas sales	$ 25,087	$ 33,572	$ 49,677	$ 66,451
Transportation revenue	1,130	1,422	2,318	2,745
Total revenues	26,217	34,994	51,995	69,196
Operating expenses
Lease operating expenses and taxes	12,870	9,208	25,378	18,710
Depreciation, depletion and amortization	19,240	10,535	36,432	20,889
Impairment	83,506		174,881
Transportation expenses	409	551	987	1,116
General and administrative	3,788	3,867	8,807	7,833
Total operating expenses	119,813	24,161	246,485	48,548
Income (loss) from operations	(93,596)	10,833	(194,490)	20,648
Other income (expense)
Interest and other income	4,104	2,228	4,121	2,362
Gain on debt extinguishment	14,407		14,407
Interest expense	(6,735)	(645)	(11,968)	(1,399)
Loss on contingent consideration	(140)		(270)
Gain (loss) on derivative financial instruments	(3,300)	(1,668)	661	(2,661)
Total other income (expense)	8,336	(85)	6,951	(1,698)
Income (loss) before taxes	(85,260)	10,748	(187,539)	18,950
Deferred income tax expense (benefit)	16	(6)	8	(14)
Net income (loss)	(85,276)	10,754	(187,547)	18,964
Less dividends and accretion on preferred shares	2	2	5	5
Net income (loss) applicable to common stockholders	$ (85,278)	$ 10,752	$ (187,552)	$ 18,959
Earnings (loss) per share-Basic (in dollars per share)	$ (1.05)	$ 0.15	$ (2.31)	$ 0.26
Earnings (loss) per share-Diluted (in dollars per share)	$ (1.05)	$ 0.15	$ (2.31)	$ 0.26
Weighted average common shares outstanding-Basic (in shares)	81,202,007	73,651,858	81,036,508	73,379,507
Weighted average common shares outstanding-Diluted (in shares)	81,202,007	73,904,104	81,036,508	73,558,350