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Accumulated Other Comprehensive Loss ("AOCL") - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance $ 202,430 $ 192,237 $ 203,907 $ 185,766
Foreign currency translation (4,528) 723 (5,842) (1,578)
Reclassification to income, net of tax (29) 0 (93) 0
Ending Balance 210,099 201,502 210,099 201,502
Marketable Investments [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (89)   (25)  
Foreign currency translation [1] 0   0  
Unrealized gain before reclassification, net of tax (29)   (93)  
Reclassification to income, net of tax [2] 0   0  
Ending Balance (118)   (118)  
Interest Rate Swap [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (16) (631) (212) (821)
Foreign currency translation [1] 0 0 0 0
Unrealized gain before reclassification, net of tax 32 (7) 123 (3)
Reclassification to income, net of tax [2] 36 146 141 332
Ending Balance (52) (492) (52) (492)
Translation Adjustment [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (4,266) (2,170) (2,952) (131)
Foreign currency translation [1] (4,528) 723 (5,842) (1,578)
Unrealized gain before reclassification, net of tax 0 0 0 0
Reclassification to income, net of tax [2] 0 0 0 0
Ending Balance (8,794) (1,447) (8,794) (1,447)
Total AOCI/L [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (4,371) (2,801) (3,189) (690)
Foreign currency translation [1] (4,528) 723 (5,842) (1,578)
Unrealized gain before reclassification, net of tax 3 (7) 30 (3)
Reclassification to income, net of tax [2] 36 146 141 332
Ending Balance $ (8,860) $ (1,939) $ (8,860) $ (1,939)
[1] The Company does not record tax provisions or benefits for the net changes in foreign currency translation adjustments as it intends to permanently reinvest undistributed earnings of its foreign subsidiaries.
[2] Reclassification is related to the Company’s interest rate swap (cash flow hedge) and was recorded in interest expense on the Consolidated Statements of Income. Refer to Note 7 – Derivatives and Hedging