Securities - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Schedule of Available-for-sale Securities [Line Items]
Amortized cost within one year	$ 2,607
Amortized cost one to five years	336,326
Amortized cost for five to ten years	217,280
Amortized cost for after ten years	271,112
Available for sale	827,325
Amortized Cost	1,064,941	$ 1,137,702
Within one year, amortized cost	47,101
One to five years, amortized cost	226,069
Five to ten years, amortized cost	317,729
After ten years, amortized cost	995,563
Total amortized cost	1,586,462
Investment securities, held to maturity	2,015,537	2,022,748
Fair value within one year	2,572
Fair value for one to five years	310,880
Fair value for five to ten years	186,923
Fair value for after ten years	234,383
Total fair value	734,758
Investment securities, available for sale	943,441	997,558
Within one year, fair value	46,946
One to five years, fair value	214,351
Five to ten years, fair value	276,719
After ten years, fair value	807,296
Total fair value	1,345,312
Fair Value	1,709,392	1,681,309
Federal agency collateralized mortgage obligations
Schedule of Available-for-sale Securities [Line Items]
Available for sale	25,919
Amortized Cost	25,919	33,011
Investment securities, held to maturity	55,379	56,564
Investment securities, available for sale	24,559	31,215
Fair Value	47,376	47,699
Federal agency mortgage-backed pools
Schedule of Available-for-sale Securities [Line Items]
Available for sale	211,697
Amortized Cost	211,697	220,963
Investment securities, held to maturity	338,861	343,953
Investment securities, available for sale	184,124	190,656
Fair Value	287,055	287,239
Private labeled mortgage-backed pools
Schedule of Available-for-sale Securities [Line Items]
Investment securities, held to maturity	34,835	35,466
Fair Value	$ 29,649	$ 29,973

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