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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2019
Stockholders' Equity Note [Abstract] |
Schedule of Accumulated Other Comprehensive Loss | The changes in the balances of accumulated other comprehensive loss by component are as follows:
(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, 2018 | $ | (36,669 | ) |  | $ | (2,647 | ) |  | $ | 338 |  |  | $ | (38,978 | )
Other comprehensive income (loss) | (732 | ) |  | 92 |  |  | 256 |  |  | (384 | )
Balance at March 31, 2019 | $ | (37,401 | ) |  | $ | (2,555 | ) |  | $ | 594 |  |  | $ | (39,362 | )

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=114867106&loc=SL7669686-108580 + Details
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