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Stockholders' Equity (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2013
Cash Dividends | The Company paid cash dividends during the three months ended March 31, 2012 and 2013 as follows:
2012: |  | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 30, 2012 |  | $ | 0.05 |  |  | $ | 7,788 |
2013: |  | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 29, 2013 |  | $ | 0.05 |  |  | $ | 7,312 |

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- Definition Dividend Activity + References No definition available. + Details
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Namespace Prefix: | pten_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration