Business Segments - Capital Expenditures (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Segment Reporting Information [Line Items] | |||
Capital expenditures | $ 662,461 | $ 973,988 | $ 1,011,578 |
Operating Segments | Contract Drilling
|
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Segment Reporting Information [Line Items] | |||
Capital expenditures | 504,508 | 744,949 | 784,686 |
Operating Segments | Pressure Pumping
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Segment Reporting Information [Line Items] | |||
Capital expenditures | 122,782 | 194,117 | 198,061 |
Operating Segments | Oil and Natural Gas
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Segment Reporting Information [Line Items] | |||
Capital expenditures | 31,245 | 29,888 | 22,884 |
Corporate and other
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Segment Reporting Information [Line Items] | |||
Capital expenditures | $ 3,926 | $ 5,034 | $ 5,947 |