Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenues:
Drilling Services Revenue	$ 127,553	$ 138,250	$ 245,510	$ 271,324
Production Services Revenue	132,259	110,104	253,336	206,700
Revenues	259,812	248,354	498,846	478,024
Costs and expenses:
Drilling Services Costs and Expenses	83,762	89,294	160,100	178,280
Production Services Costs and Expenses	82,505	70,450	160,257	131,069
Depreciation and amortization	45,791	47,348	91,317	93,633
General and administrative	25,276	23,605	49,759	46,659
Bad debt expense	561	137	437	418
Impairment charges	0	44,788	0	44,788
Total costs and expenses	237,895	275,622	461,870	494,847
Income (loss) from operations	21,917	(27,268)	36,976	(16,823)
Other (expense) income:
Interest expense	(10,728)	(12,331)	(23,116)	(23,793)
Loss on extinguishment of debt	(14,595)	0	(22,482)	0
Other	2,017	(1,249)	4,691	(2,070)
Total other expense	(23,306)	(13,580)	(40,907)	(25,863)
Loss before income taxes	(1,389)	(40,848)	(3,931)	(42,686)
Income tax benefit	1,070	14,953	1,033	15,499
Net loss	$ (319)	$ (25,895)	$ (2,898)	$ (27,187)
Loss per common share - Basic (USD per share)	$ (0.01)	$ (0.42)	$ (0.05)	$ (0.44)
Loss per common share - Diluted (USD per share)	$ (0.01)	$ (0.42)	$ (0.05)	$ (0.44)
Weighted average number of shares outstanding - Basic	62,877	62,177	62,710	62,073
Weighted-average number of shares outstanding - Diluted	62,877	62,177	62,710	62,073