Investment Securities - Summary of Available-for-Sale Securities - (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	$ 1,249,753	$ 1,107,510
Available-for-Sale Securities, Gross Unrealized Gains	555	294
Available-for-Sale Securities, Gross Unrealized Loss	(169,188)	(161,096)
Available-for-Sale Securities, Fair Value	1,081,120	946,708
Obligations of U.S. government corporations and agencies [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	140,008	120,398
Available-for-Sale Securities, Gross Unrealized Gains	7	0
Available-for-Sale Securities, Gross Unrealized Loss	(19,722)	(18,800)
Available-for-Sale Securities, Fair Value	120,293	101,598
Mortgage-backed securities [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	197,714	185,675
Available-for-Sale Securities, Gross Unrealized Gains	23	0
Available-for-Sale Securities, Gross Unrealized Loss	(31,480)	(29,167)
Available-for-Sale Securities, Fair Value	166,257	156,508
Collateralized mortgage obligations [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	342,168	285,194
Available-for-Sale Securities, Gross Unrealized Gains	105	9
Available-for-Sale Securities, Gross Unrealized Loss	(52,314)	(49,436)
Available-for-Sale Securities, Fair Value	289,959	235,767
Asset-backed securities [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	197,464	142,215
Available-for-Sale Securities, Gross Unrealized Gains	419	270
Available-for-Sale Securities, Gross Unrealized Loss	(4,319)	(5,505)
Available-for-Sale Securities, Fair Value	193,564	136,980
Corporate bonds [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	70,931	71,092
Available-for-Sale Securities, Gross Unrealized Gains	0	0
Available-for-Sale Securities, Gross Unrealized Loss	(7,870)	(8,672)
Available-for-Sale Securities, Fair Value	63,061	62,420
Obligations of state and political subdivisions [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	245,863	247,204
Available-for-Sale Securities, Gross Unrealized Gains	1	15
Available-for-Sale Securities, Gross Unrealized Loss	(46,307)	(42,961)
Available-for-Sale Securities, Fair Value	199,557	204,258
US Treasuries [Member]
Marketable Securities [Line Items]
Available-for-Sale Securities, Amortized Cost	55,605	55,732
Available-for-Sale Securities, Gross Unrealized Gains	0	0
Available-for-Sale Securities, Gross Unrealized Loss	(7,176)	(6,555)
Available-for-Sale Securities, Fair Value	$ 48,429	$ 49,177

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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