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Stockholders' Equity - Changes in Accumulated Other Comprehensive Loss, Net of Tax by Component (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 357,102 $ 372,944
Other comprehensive income (loss) before reclassifications (1,880) (1,920)
Amounts reclassified from accumulated other comprehensive income (loss) 238 (36)
Ending Balance 352,316 370,375
ASU 2018-02 [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 385 385
Ending Balance 385 385
Accumulated Other Comprehensive Loss [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (11,914) (11,639)
Ending Balance (13,556) (13,595)
Unrealized Gains (Losses) on Available-for-Sale Securities [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (552) 32
Other comprehensive income (loss) before reclassifications (975) (57)
Amounts reclassified from accumulated other comprehensive income (loss) 251 (135)
Ending Balance (1,276) (160)
Defined Benefit Plan Adjustments [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (5,613) (9,621)
Amounts reclassified from accumulated other comprehensive income (loss) (13) 99
Ending Balance (5,626) (9,522)
Foreign Currency Adjustments [Member]    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (6,134) (2,435)
Other comprehensive income (loss) before reclassifications (905) (1,863)
Ending Balance $ (7,039) $ (4,298)