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Accumulated Other Comprehensive (Loss) Income | 12 Months Ended
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Dec. 31, 2011
Accumulated Other Comprehensive (Loss) Income | Note 7: Accumulated Other Comprehensive (Loss) Income Accumulated other comprehensive (loss) income consists of the following (in thousands):
|  | Pension Adjustment |  |  | Unrealized Gain (Loss) On Securities |  |  | Foreign Currency Translation |  |  | Net Loss On Cash Flow Hedge |  |  | Total |
Balance at December 31, 2009 |  | $ | (8,583 | ) |  | $ | 220 |  |  | $ | 77 |  |  | $ | (520 | ) |  | $ | (8,806 | )
Change during 2010: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before-tax amount |  |  | (2,125 | ) |  |  | 441 |  |  |  | 329 |  |  |  | 209 |  |  |  | (1,146 | )
Tax expense (benefit) |  |  | 775 |  |  |  | (160 | ) |  |  | (120 | ) |  |  | (76 | ) |  |  | 419 |
Total activity in 2010 |  |  | (1,350 | ) |  |  | 281 |  |  |  | 209 |  |  |  | 133 |  |  |  | (727 | )
Balance at December 31, 2010 |  | $ | (9,933 | ) |  | $ | 501 |  |  | $ | 286 |  |  | $ | (387 | ) |  | $ | (9,533 | )
Change during 2011: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Before-tax amount |  |  | (4,800 | ) |  |  | (495 | ) |  |  | (218 | ) |  |  | 610 |  |  |  | (4,903 | )
Tax expense (benefit) |  |  | 1,752 |  |  |  | 181 |  |  |  | 80 |  |  |  | (223 | ) |  |  | 1,790 |
Total activity in 2011 |  |  | (3,048 | ) |  |  | (314 | ) |  |  | (138 | ) |  |  | 387 |  |  |  | (3,113 | )
Balance at December 31, 2011 |  | $ | (12,981 | ) |  | $ | 187 |  |  | $ | 148 |  |  | $ | - |  |  | $ | (12,646 | )

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- Definition Other Comprehensive Income [Text Block] + References No definition available. + Details
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Namespace Prefix: | res_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration