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Reclassification Out Of Accumulated Other Comprehensive Loss (Schedule Of Reclassification Out Of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charge and other |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ (1,547) | $ 2,606
Other expense |  |  |  |  |  |  |  |  |  |  |  |  | (1,141) | (1,673) | (315)
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  | (111,744) | (115,700) | (99,331)
Net of tax | $ 39,421 | $ 20,565 | $ 21,210 | $ 14,205 | $ 23,338 | $ 16,906 | $ 21,558 | $ 19,439 | $ 67,710 | $ 23,648 | $ 8,256 | $ 11,331 | 95,401 | 81,241 | $ 110,945
Foreign currency translaction adjustments [Member] | Reclassification Out Of Accumulated Other Comprehensive Loss [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,930 |
Foreign currency translaction adjustments [Member] | Disposal Of Tianjin Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset impairment charge and other |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,979 |
Foreign currency translaction adjustments [Member] | Foreign Currency Translations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Other expense |  |  |  |  |  |  |  |  |  |  |  |  |  | (49) |
Other [Member] | Reclassification Out Of Accumulated Other Comprehensive Loss [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net of tax |  |  |  |  |  |  |  |  |  |  |  |  |  | (30) |
Other [Member] | Actuarial Net Gains [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Selling, general and administrative expenses |  |  |  |  |  |  |  |  |  |  |  |  | (13) | $ (30) |
Net of tax |  |  |  |  |  |  |  |  |  |  |  |  | $ (13) |  |

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