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Business Segments - Depreciation, Amortization and Improvement (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |
Depreciation, depletion, amortization and impairment | $ 597,469 | $ 526,614 | $ 437,279
Operating Segments | Contract Drilling |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation, depletion, amortization and impairment | 438,728 | 390,316 | 344,312
Operating Segments | Pressure Pumping |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation, depletion, amortization and impairment | 129,984 | 111,062 | 73,279
Operating Segments | Oil and Natural Gas |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation, depletion, amortization and impairment | 24,400 | 21,417 | 16,962
Corporate and other |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation, depletion, amortization and impairment | $ 4,357 | $ 3,819 | $ 2,726

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- Definition Depreciation, Depletion, Amortization and Impairment + References No definition available. + Details
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Namespace Prefix: | pten_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration