Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenues:
Total revenues	$ 393,955	$ 324,797	$ 1,090,373	$ 954,871
Expenses:
General and administrative, including stock-based compensation of $3,811 and $2,837 in three months and $10,932 and $8,966 in the nine months ended September 30, 2014 and 2013, respectively	41,516	43,179	124,028	134,457
Depreciation and amortization	54,485	53,623	157,975	155,471
Loss on disposal of assets	979	411	1,216	2,290
Total expenses	361,100	319,956	1,022,456	948,521
Operating income	32,855	4,841	67,917	6,350
Other income (expense):
Interest expense	(16,828)	(16,927)	(50,253)	(50,541)
Interest income	11	10	37	40
Other income	139	232	612	567
Income (loss) before income taxes	16,177	(11,844)	18,313	(43,584)
Income tax benefit (expense)	(6,246)	4,888	(7,846)	15,054
Net income (loss)	9,931	(6,956)	10,467	(28,530)
Earnings per share of common stock:
Basic	$ 0.24	$ (0.17)	$ 0.25	$ (0.70)
Diluted	$ 0.24	$ (0.17)	$ 0.25	$ (0.70)
Completion and Remedial Services
Revenues:
Total revenues	193,699	127,119	495,550	377,696
Expenses:
Expenses	119,138	82,959	308,235	247,813
Depreciation and amortization	17,530	16,248	50,827	47,063
Well Servicing
Revenues:
Total revenues	91,119	97,783	273,660	279,379
Expenses:
Expenses	67,636	70,983	202,144	203,586
Depreciation and amortization	14,263	15,494	41,355	45,946
Fluid Services
Revenues:
Total revenues	92,852	86,121	276,001	256,052
Expenses:
Expenses	66,121	59,673	197,958	176,844
Depreciation and amortization	16,709	15,999	48,445	44,984
Contract Drilling
Revenues:
Total revenues	16,285	13,774	45,162	41,744
Expenses:
Expenses	$ 11,225	$ 9,128	$ 30,900	$ 28,060