XML 57 R13.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Note E - Accumulated Other Comprehensive Loss | 12 Months Ended
--- | ---
Dec. 31, 2012
Accumulated Other Comprehensive Loss [Text Block] | Note E – Accumulated Other Comprehensive Loss 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, 2010 |  | $ | 675 |  |  | $ | (11,745 | ) |  | $ | (11,070 | )
Current period credit |  |  | 139 |  |  |  | 2,413 |  |  |  | 2,552 |
Income tax expense |  |  | -- |  |  |  | (864 | ) |  |  | (864 | )
Other |  |  | (46 | ) |  |  | -- |  |  |  | (46 | )
Balance at December 31, 2010 |  |  | 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 | )

X
- 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
Name: | grc_AccumulatedOtherComprehensiveLossTextBlock
Namespace Prefix: | grc_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration