Changes in Accumulated Other Comprehensive (Loss) Income by Component - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Accumulated other comprehensive income
Beginning balance	$ 450,589	$ 437,845	$ 426,172	$ 452,677
Other comprehensive loss before reclassifications			(1,306)	(9,530)
Losses reclassified from other comprehensive loss			6	23
Net current period other comprehensive loss			(1,300)	(9,507)
Ending balance	441,733	422,076	441,733	422,076
Realized loss (less than)			100	100
Changes in other comprehensive (loss) income, tax benefit			300	2,500
Accumulated Other Comprehensive (Loss) Gain, net of taxes
Accumulated other comprehensive income
Beginning balance	(3,130)	(3,214)	(3,477)	4,000
Ending balance	$ (4,777)	$ (5,507)	$ (4,777)	$ (5,507)