XML 47 R68.htm IDEA: XBRL DOCUMENT
v3.19.3

Fair Value of Performance Units (Detail) - Performance Units Awards $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2019 USD ($)
2019 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair value at date of grant | $ 9,958
2018 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair value at date of grant | 8,004
2017 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair value at date of grant | 5,780
2016 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair value at date of grant | 3,854
2015 |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Fair value at date of grant | $ 4,052

X
- Definition Share based compensation arrangement by share based payment award grant date fair value of awards. + References No definition available. + Details
Name: | pten_ShareBasedCompensationArrangementByShareBasedPaymentAwardGrantDateFairValueOfAwards
Namespace Prefix: | pten_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=pten_YearTwentyNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=pten_YearTwentyEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=pten_YearTwentySeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=pten_YearTwentySixteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardDateAxis=pten_YearTwentyFifteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |