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Note E - Accumulated Other Comprehensive Loss | 12 Months Ended
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Dec. 31, 2013
Accumulated Other Comprehensive Loss [Abstract] |
Accumulated Other Comprehensive Loss [Text Block] | Note E – Accumulated Other Comprehensive Loss The reclassifications out of accumulated other comprehensive loss as reported in the Consolidated Statement of Income are:
Pension and other post retirement benefits: |  | 2013 |  |  | 2012 |  |  | 2011 |
Recognized actuarial gain (loss) (a) |  | $ | 10,282 |  |  | $ | (3,922 | ) |  | $ | (12,022 | )
Settlement loss (b) |  |  | 2,756 |  |  |  | 1,940 |  |  |  | 1,987 |
Settlement loss (c) |  |  | 1,413 |  |  |  | 995 |  |  |  | 1,023 |
Total before income tax |  |  | 14,451 |  |  |  | (987 | ) |  |  | (9,012 | )
Income tax |  |  | (5,249 | ) |  |  | 312 |  |  |  | 3,282 |
Net of income tax |  | $ | 9,202 |  |  | $ | (675 | ) |  | $ | (5,730 | )
(a) The recognized actuarial gain (loss) is included in the computation of net periodic benefit cost. See Note G for additional details. (b) This portion of the settlement loss is included in Cost of products sold in the Consolidated Statements of Income. (c) This portion of the settlement loss is included in Selling, general and administrative expenses in the Consolidated Statements of Income. The components of accumulated other comprehensive loss as reported in the Consolidated Balance Sheets are:
|  | Currency Translation Adjustments |  |  | Pension and OPEB Adjustments |  |  | Accumulated Other Comprehensive Income (Loss) |
Balance at January 1, 2011 |  | $ | 768 |  |  | $ | (10,196 | ) |  | $ | (9,428 | )
Current period charge |  |  | (886 | ) |  |  | (9,012 | ) |  |  | (9,898 | )
Income tax benefit |  |  | -- |  |  |  | 3,282 |  |  |  | 3,282 |
Balance at December 31, 2011 |  |  | (118 | ) |  |  | (15,926 | ) |  |  | (16,044 | )
Current period credit (charge) |  |  | 437 |  |  |  | (987 | ) |  |  | (550 | )
Income tax benefit |  |  | -- |  |  |  | 312 |  |  |  | 312 |
Balance at December 31, 2012 |  |  | 319 |  |  |  | (16,601 | ) |  |  | (16,282 | )
Current period (charge) credit |  |  | (1,381 | ) |  |  | 14,451 |  |  |  | 13,070 |
Income tax (charge) |  |  | -- |  |  |  | (5,249 | ) |  |  | (5,249 | )
Balance at December 31, 2013 |  | $ | (1,062 | ) |  | $ | (7,399 | ) |  | $ | (8,461 | )

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- Definition The entire disclosure for all net gains and losses yet to be realized from unrealized pension and postretirement costs and gains and losses from translating the financial statement of foreign subsidiaries. + References No definition available. + Details
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Namespace Prefix: | grc_
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Balance Type: | na
Period Type: | duration

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- Details
Name: | grc_AccumulatedOtherComprehensiveLossTextBlockAbstract
Namespace Prefix: | grc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration