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Schedule of Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Defined Benefit Plan [Abstract] |  |
Plan assets in other long-term assets | $ 605 | $ 572
Current portion of pension benefit obligation in wages and benefits payable | 3,198 | 2,730
Long-term portion of pension benefit obligation | 92,073 | 91,522
Pension benefit obligation, net | $ 94,666 | $ 93,680

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