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Other Comprehensive Income (Loss) - Changes in accumulated other comprehensive income (loss), net of tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Securities, Available-for-sale [Abstract]
Beginning balance	$ 1,279,554	$ 1,260,833	$ 1,350,775	$ 1,240,892
Other comprehensive income (loss) before reclassifications	(32,736)	6,655	(91,140)	(10,963)
Amounts reclassified from accumulated other comprehensive income (loss)	100	(137)	117	(17)
Amortization of unrealized loss on securities transferred to held-to-maturity	1,991		49,095
Net other comprehensive income during period	(30,645)	6,518	(138,127)	(10,980)
Ending balance	1,252,720	1,306,336	1,252,720	1,306,336
Amortization of unrealized loss on securities transferred to held-to-maturity	1,991		1,991
Securities Available For Sale
Debt Securities, Available-for-sale [Abstract]
Beginning balance	(72,345)	(1,615)	(13,958)	16,168
Other comprehensive income (loss) before reclassifications	(33,020)	6,655	(91,424)	(10,962)
Amounts reclassified from accumulated other comprehensive income (loss)	100	(236)	117	(402)
Amortization of unrealized loss on securities transferred to held-to-maturity	0		0
Net other comprehensive income during period	(32,920)	6,419	(91,307)	(11,364)
Ending balance	(105,265)	4,804	(105,265)	4,804
Amortization of unrealized loss on securities transferred to held-to-maturity			0
Securities Held to Maturity
Debt Securities, Available-for-sale [Abstract]
Beginning balance	(49,095)	0	0	0
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income (loss)	0	0	0	0
Amortization of unrealized loss on securities transferred to held-to-maturity	1,991		49,095
Net other comprehensive income during period	1,991	0	(47,104)	0
Ending balance	(47,104)	0	(47,104)	0
Amortization of unrealized loss on securities transferred to held-to-maturity			1,991
Derivatives
Debt Securities, Available-for-sale [Abstract]
Beginning balance	(284)	(383)	(284)	(668)
Other comprehensive income (loss) before reclassifications	284	0	284	(1)
Amounts reclassified from accumulated other comprehensive income (loss)	0	99	0	385
Amortization of unrealized loss on securities transferred to held-to-maturity	0		0
Net other comprehensive income during period	284	99	284	384
Ending balance	0	(284)	0	(284)
Amortization of unrealized loss on securities transferred to held-to-maturity			0
Accumulated Other Comprehensive Income (Loss)
Debt Securities, Available-for-sale [Abstract]
Beginning balance	(121,724)	(1,998)	(14,242)	15,500
Net other comprehensive income during period	(30,645)	6,518	(138,127)	(10,980)
Ending balance	$ (152,369)	$ 4,520	$ (152,369)	$ 4,520

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Other Comprehensive Income (Loss), Held-to-Maturity Securities Adjustment, Net of Tax

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