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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
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Property Plant And Equipment [Abstract] |  |  |
Depreciation and impairment expense | $ 693,390 pten_DepreciationAndImpairmentLosses | $ 573,106 pten_DepreciationAndImpairmentLosses | $ 502,953 pten_DepreciationAndImpairmentLosses
Amortization expense | 3,643 us-gaap_AmortizationOfIntangibleAssets | 3,993 us-gaap_AmortizationOfIntangibleAssets | 4,110 us-gaap_AmortizationOfIntangibleAssets
Depletion expense | 21,697 us-gaap_Depletion | 20,370 us-gaap_Depletion | 19,551 us-gaap_Depletion
Total | $ 718,730 pten_DepreciationDepletionAmortizationAndImpairment | $ 597,469 pten_DepreciationDepletionAmortizationAndImpairment | $ 526,614 pten_DepreciationDepletionAmortizationAndImpairment

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- Definition Depreciation and impairment losses. + References No definition available. + Details
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- Definition Depreciation depletion amortization and impairment. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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Balance Type: | debit
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- Definition The noncash expense charged against earnings to recognize the consumption of natural resources. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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Balance Type: | debit
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- Details
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