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Accumulated Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Abstract] |
Schedule Of Accumulated Other Comprehensive Income (Loss) By Component |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿(in thousands) | Foreign currency translation adjustment |  | Defined benefit pension plan |  | Liquidation of non-US entity and purchase of non-controlling interests |  |  | Total
﻿Balance at December 31, 2015 | $ | (37,675) |  | $ | (1,873) |  | $ | — |  | $ | (39,548)
﻿Other comprehensive income (loss) |  | (13,063) |  |  | (902) |  |  | 288 |  |  | (13,677)
﻿Balance at December 31, 2016 |  | (50,738) |  |  | (2,775) |  |  | 288 |  |  | (53,225)
﻿Other comprehensive income |  | 31,419 |  |  | 220 |  |  | 50 |  |  | 31,689
﻿Balance at December 31, 2017 | $ | (19,319) |  | $ | (2,555) |  | $ | 338 |  | $ | (21,536)
﻿

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- Definition Tabular disclosure of the components of accumulated 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 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669686-108580 + Details
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