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Retirement Plans - Summary of the Non-U.S. Pension Plans (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]    
Projected benefit obligation $ 81,566 $ 60,359
Accumulated benefit obligations 73,644 56,029
Fair value of plan assets $ 60,832 $ 44,940