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Accumulated Other Comprehensive Loss (Schedule Of Accumulated Other Comprehensive Loss By Component) (Details) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward] |
Beginning Balance | $ 615,948
Ending Balance | 609,238
Foreign currency translation adjustment |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |
Beginning Balance | (19,319)
Other comprehensive income (loss) | 7,416
Ending Balance | (11,903)
Defined benefit pension plan |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |
Beginning Balance | (2,555)
Other comprehensive income (loss) | (17)
Ending Balance | (2,572)
Liquidation of non-US entity and purchase of non-controlling interests |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |
Beginning Balance | 338
Other comprehensive income (loss) | 0
Ending Balance | 338
Accumulated Other Comprehensive Income (Loss) |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |
Beginning Balance | (21,536)
Other comprehensive income (loss) | 7,399
Ending Balance | $ (14,137)

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- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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