Investment Securities - Summary of Held-to-maturity Securities with Unrealized Loss (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	$ 96,111	$ 122,785
Less than 12 months, unrealized loss	$ 3,108	$ 3,306
Less than 12 months, no. of securities | security	34	34
12 months or more, fair value	$ 434,928	$ 386,135
12 months or more, unrealized loss	$ 75,340	$ 70,595
12 months or more, no. of securities | security	157	150
Total fair value	$ 531,039	$ 508,920
Total unrealized loss	78,448	73,901
U.S. government sponsored agencies
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	35,986	64,487
Less than 12 months, unrealized loss	$ 537	$ 356
Less than 12 months, no. of securities | security	12	14
12 months or more, fair value	$ 118,531	$ 86,071
12 months or more, unrealized loss	$ 8,550	$ 7,783
12 months or more, no. of securities | security	21	18
Total fair value	$ 154,517	$ 150,558
Total unrealized loss	9,087	8,139
States and political subdivisions
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	0	0
Less than 12 months, unrealized loss	$ 0	$ 0
Less than 12 months, no. of securities | security	0	0
12 months or more, fair value	$ 109,887	$ 111,040
12 months or more, unrealized loss	$ 31,075	$ 30,104
12 months or more, no. of securities | security	67	67
Total fair value	$ 109,887	$ 111,040
Total unrealized loss	31,075	30,104
Residential mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	51,550	44,379
Less than 12 months, unrealized loss	$ 1,274	$ 1,105
Less than 12 months, no. of securities | security	17	14
12 months or more, fair value	$ 133,314	$ 117,654
12 months or more, unrealized loss	$ 20,356	$ 17,477
12 months or more, no. of securities | security	39	34
Total fair value	$ 184,864	$ 162,033
Total unrealized loss	21,630	18,582
Commercial mortgage-backed securities
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 months, fair value	8,575	13,919
Less than 12 months, unrealized loss	$ 1,297	$ 1,845
Less than 12 months, no. of securities | security	5	6
12 months or more, fair value	$ 73,196	$ 71,370
12 months or more, unrealized loss	$ 15,359	$ 15,231
12 months or more, no. of securities | security	30	31
Total fair value	$ 81,771	$ 85,289
Total unrealized loss	$ 16,656	$ 17,076