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Employee Benefit Plans - Plans in which Accumulated Benefit Obligation Exceeded Fair Value of Plan Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Non-U.S. Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated benefit obligation $ 1,853 $ 1,355
Fair value of plan assets 1,679 592
U.S. Plans [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Accumulated benefit obligation 174,105 202,716
Fair value of plan assets $ 140,988 $ 172,119