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Pension and Other Post Retirement Benefit Plans - Components of Net Periodic Benefit Cost for Company's Defined Benefit Plans (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
United States      
Net periodic benefit cost:      
Interest cost $ 42 $ 85 $ 127
Amortization of prior service cost and actuarial loss 26 7  
Net periodic benefit cost $ 68 $ 92 $ 127
Assumptions:      
Discount rate 1.20% 2.40% 3.65%
German Plan      
Net periodic benefit cost:      
Interest cost $ 91 $ 88 $ 147
Expected return on plan assets (120) (121) (126)
Amortization of prior service cost and actuarial loss 133 124 72
Net periodic benefit cost $ 104 $ 91 $ 93
Assumptions:      
Discount rate 1.08% 1.06% 1.06%
Long-term return on assets 2.90% 3.10% 3.10%