Accumulated Other Comprehensive Income (Loss) ("AOCIL") - Summary of Changes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Changes in AOCIL [Roll Forward]
Balances at beginning of period	$ 375,162	$ 331,134	$ 347,596	$ 398,484
Other comprehensive income (loss) before reclassifications	(11,851)	(12,042)	107	(97,329)
Amounts reclassified from AOCIL	57	0	352	(217)
Net current period other comprehensive income (loss)	(11,794)	(12,042)	459	(97,546)
Balances at end of period	374,998	332,308	374,998	332,308
Accumulated Other Comprehensive Income (Loss)
Changes in AOCIL [Roll Forward]
Balances at beginning of period	(80,510)	(85,003)	(92,763)	501
Net current period other comprehensive income (loss)	(11,794)	(12,042)	459	(97,546)
Balances at end of period	(92,304)	(97,045)	(92,304)	(97,045)
Unrealized Gains (Losses) on Securities AFS
Changes in AOCIL [Roll Forward]
Balances at beginning of period	(57,695)	(59,335)	(68,742)	6,299
Other comprehensive income (loss) before reclassifications	(12,130)	(12,895)	(1,258)	(78,312)
Amounts reclassified from AOCIL	0	0	175	(217)
Net current period other comprehensive income (loss)	(12,130)	(12,895)	(1,083)	(78,529)
Balances at end of period	(69,825)	(72,230)	(69,825)	(72,230)
Unrealized losses on securities transferred to securities HTM
Changes in AOCIL [Roll Forward]
Balances at beginning of period	(16,811)	(19,870)	(18,223)	0
Other comprehensive income (loss) before reclassifications	696	853	2,108	(19,017)
Amounts reclassified from AOCIL	0	0	0	0
Net current period other comprehensive income (loss)	696	853	2,108	(19,017)
Balances at end of period	(16,115)	(19,017)	(16,115)	(19,017)
Dispropor- tionate Tax Effects from Securities AFS
Changes in AOCIL [Roll Forward]
Balances at beginning of period	(5,798)	(5,798)	(5,798)	(5,798)
Other comprehensive income (loss) before reclassifications	0	0	0	0
Amounts reclassified from AOCIL	0	0	0	0
Net current period other comprehensive income (loss)	0	0	0	0
Balances at end of period	(5,798)	(5,798)	(5,798)	(5,798)
Unrealized Losses on Derivative Instruments
Changes in AOCIL [Roll Forward]
Balances at beginning of period	(206)	0	0	0
Other comprehensive income (loss) before reclassifications	(417)	0	(743)	0
Amounts reclassified from AOCIL	57	0	177	0
Net current period other comprehensive income (loss)	(360)	0	(566)	0
Balances at end of period	$ (566)	$ 0	$ (566)	$ 0