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Investment Securities - Summary of Held-to-maturity Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	$ 637,921	$ 651,527
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	557	163
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(83,222)	(91,766)
Fair value	555,256	559,924
U.S. Treasury Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	49,117	49,045
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(976)	(1,416)
Fair value	48,141	47,629
Residential Mortgage Pass-Through Securities Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member].
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	331,996	339,815
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	529	163
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(37,279)	(41,162)
Fair value	295,246	298,816
Other Residential MBS Issued or Guaranteed by U.S. Government Agencies or Sponsored Enterprises [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held-to-maturity Securities	256,808	262,667
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain	28
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss	(44,967)	(49,188)
Fair value	$ 211,869	$ 213,479

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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