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Accumulated Other Comprehensive Income (Loss) - Changes in Each Component of Accumulated Other Comprehensive Income (Loss), Net of Tax (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 $ 327,692 $ 350,058 $ 355,212 $ 350,108
Total other comprehensive income (loss) (25,553) 2,124 (55,062) (2,926)
Ending balance 302,062 352,413 302,062 352,413
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (14,889) 16,332 14,675 21,447
Other comprehensive income (loss) before reclassifications (25,603) 2,059 (55,167) (3,057)
Amounts reclassified from accumulated other comprehensive income (loss) (5) 1 (5) 2
Total other comprehensive income (loss) (25,608) 2,060 (55,172) (3,055)
Ending balance (40,497) 18,392 (40,497) 18,392
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (5,800) (6,763) (5,855) (6,828)
Amounts reclassified from accumulated other comprehensive income (loss) 55 64 110 129
Total other comprehensive income (loss) 55 64 110 129
Ending balance (5,745) (6,699) (5,745) (6,699)
Accumulated Other Comprehensive Income (Loss) [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (20,689) 9,569 8,820 14,619
Other comprehensive income (loss) before reclassifications (25,603) 2,059 (55,167) (3,057)
Amounts reclassified from accumulated other comprehensive income (loss) 50 65 105 131
Total other comprehensive income (loss) (25,553) 2,124 (55,062) (2,926)
Ending balance $ (46,242) $ 11,693 $ (46,242) $ 11,693