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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, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance $ 222,746 $ 202,430 $ 221,656 $ 203,907
Foreign currency translation 746 (4,528) 1,952 (5,842)
Reclassification to income, net of tax (11) (29) 22 (93)
Ending Balance 231,645 210,099 231,645 210,099
Marketable Investments [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (126) (89) (159) (25)
Foreign currency translation [1] 0 0 0 0
Unrealized gain (loss), net of tax (11) (29) 22 (93)
Reclassification to income, net of tax [2]   0   0
Ending Balance (137) (118) (137) (118)
Interest Rate Swap [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance   (16)   (212)
Foreign currency translation [1]   0   0
Unrealized gain (loss), net of tax   32   123
Reclassification to income, net of tax [2]   36   141
Ending Balance   52   52
Translation Adjustment [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (6,553) (4,266) (7,759) (2,952)
Foreign currency translation [1] 746 (4,528) 1,952 (5,842)
Unrealized gain (loss), net of tax 0 0 0 0
Reclassification to income, net of tax [2]   0   0
Ending Balance (5,807) (8,794) (5,807) (8,794)
Total AOCI/L [Member]        
Accumulated Other Comprehensive Income Loss [Line Items]        
Beginning Balance (6,679) (4,371) (7,918) (3,189)
Foreign currency translation [1] 746 (4,528) 1,952 (5,842)
Unrealized gain (loss), net of tax (11) 3 22 30
Reclassification to income, net of tax [2]   36   141
Ending Balance $ (5,944) $ (8,860) $ (5,944) $ (8,860)
[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 in the Consolidated Statements of Operations. Refer to Note 7 – Derivatives and Hedging.