Condensed Consolidated Statements Of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenues:
Oil and natural gas	$ 87,598	$ 58,274
Contract drilling	37,185	38,710
Gas gathering and processing	50,941	39,200
Total revenues	175,724	136,184
Operating costs:
Oil and natural gas	29,204	33,346
Contract drilling	29,227	28,098
Gas gathering and processing	37,704	31,066
Total operating costs	96,135	92,510
Depreciation, depletion, and amortization	46,932	55,590
Impairments	0	37,829
General and administrative	8,954	8,611
Gain on disposition of assets	(824)	(192)
Total operating expenses	151,197	194,348
Income (loss) from operations	24,527	(58,164)
Other income (expense):
Interest, net	(9,396)	(9,617)
Gain on derivatives	14,731	10,929
Other	3	(15)
Total other income (expense)	5,338	1,297
Income (loss) before income taxes	29,865	(56,867)
Income tax expense (benefit):
Deferred	13,936	(15,718)
Total income taxes	13,936	(15,718)
Net income (loss)	$ 15,929	$ (41,149)
Net income (loss) per common share:
Basic	$ 0.32	$ (0.83)
Diluted	$ 0.31	$ (0.83)