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Depreciation, Depletion, Amortization and Impairment Expense Related to Property and Equipment and Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Property Plant And Equipment [Abstract]      
Depreciation and impairment expense $ 693,390pten_DepreciationAndImpairmentLosses $ 573,106pten_DepreciationAndImpairmentLosses $ 502,953pten_DepreciationAndImpairmentLosses
Amortization expense 3,643us-gaap_AmortizationOfIntangibleAssets 3,993us-gaap_AmortizationOfIntangibleAssets 4,110us-gaap_AmortizationOfIntangibleAssets
Depletion expense 21,697us-gaap_Depletion 20,370us-gaap_Depletion 19,551us-gaap_Depletion
Total $ 718,730pten_DepreciationDepletionAmortizationAndImpairment $ 597,469pten_DepreciationDepletionAmortizationAndImpairment $ 526,614pten_DepreciationDepletionAmortizationAndImpairment