Securities - Schedule of Fair Value Of Available For Sale Securities By Contractual Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
AFS securities
Due in one year or less, Amortized Cost	$ 27,109	$ 55,876
Due in one year or less, Fair value	27,045	55,593
Due after one year to five years, Amortized Cost	712,906	560,992
Due after one year to five years, Fair value	711,402	522,979
Due after five to ten years, Amortized Cost	111,632	335,084
Due after five to ten years, Fair value	103,258	296,864
Due after ten years, Amortized Cost	3,432,342	3,826,692
Due after ten years, Fair value	3,054,516	3,146,162
Amortized Cost	4,283,989	4,778,644
Fair Value	3,896,221	4,021,598
HTM securities
Due in one year or less, Amortized Cost	0	0
Due in one year or less, Fair value	0	0
Due after one year to five years, Amortized Cost	131,741	133,168
Due after one year to five years, Fair value	123,693	121,471
Due after five to ten years, Amortized Cost	84,365	55,838
Due after five to ten years, Fair value	78,698	47,982
Due after ten years, Amortized Cost	283,053	231,709
Due after ten years, Fair value	261,259	202,271
Amortized Cost	499,159	420,715
Fair Value	463,650	371,724
Total
Due in one year or less, Amortized Cost	27,109	55,876
Due in one year or less, Fair value	27,045	55,593
Due after one year to five years, Amortized Cost	844,647	694,160
Due after one year to five years, Fair value	835,095	644,450
Due after five to ten years, Amortized Cost	195,997	390,922
Due after five to ten years, Fair value	181,956	344,846
Due after ten years, Amortized Cost	3,715,395	4,058,401
Due after ten years, Fair value	3,315,775	3,348,433
Amortized Cost	4,783,148	5,199,359
Fair Value	4,359,871	4,393,322
Government-sponsored residential mortgage-backed securities
AFS securities
Due in one year or less, Amortized Cost	160	561
Due in one year or less, Fair value	159	557
Due after one year to five years, Amortized Cost	16,622	21,535
Due after one year to five years, Fair value	16,287	20,940
Due after five to ten years, Amortized Cost	11,747	13,212
Due after five to ten years, Fair value	11,063	12,268
Due after ten years, Amortized Cost	2,819,822	3,064,020
Due after ten years, Fair value	2,550,071	2,528,130
Amortized Cost	2,848,351	3,099,328
Fair Value	2,577,580	2,561,895
HTM securities
Due in one year or less, Amortized Cost	0	0
Due in one year or less, Fair value	0	0
Due after one year to five years, Amortized Cost	0	0
Due after one year to five years, Fair value	0	0
Due after five to ten years, Amortized Cost	0	0
Due after five to ten years, Fair value	0	0
Due after ten years, Amortized Cost	221,347	231,709
Due after ten years, Fair value	200,291	202,271
Amortized Cost	221,347	231,709
Fair Value	200,291	202,271
Government-sponsored commercial mortgage-backed securities
AFS securities
Due in one year or less, Amortized Cost	0	0
Due in one year or less, Fair value	0	0
Due after one year to five years, Amortized Cost	611,811	436,515
Due after one year to five years, Fair value	611,305	404,181
Due after five to ten years, Amortized Cost	49,865	270,546
Due after five to ten years, Fair value	44,529	235,853
Due after ten years, Amortized Cost	509,977	655,458
Due after ten years, Fair value	416,885	521,077
Amortized Cost	1,171,653	1,362,519
Fair Value	1,072,719	1,161,111
HTM securities
Due in one year or less, Amortized Cost	0	0
Due in one year or less, Fair value	0	0
Due after one year to five years, Amortized Cost	131,741	133,168
Due after one year to five years, Fair value	123,693	121,471
Due after five to ten years, Amortized Cost	55,365	55,838
Due after five to ten years, Fair value	49,424	47,982
Due after ten years, Amortized Cost	0	0
Due after ten years, Fair value	0	0
Amortized Cost	187,106	189,006
Fair Value	173,117	169,453
U.S. Agency bonds
AFS securities
Due in one year or less, Amortized Cost		0
Due in one year or less, Fair value		0
Due after one year to five years, Amortized Cost		19,608
Due after one year to five years, Fair value		17,672
Due after five to ten years, Amortized Cost		0
Due after five to ten years, Fair value		0
Due after ten years, Amortized Cost		0
Due after ten years, Fair value		0
Amortized Cost		19,608
Fair Value		17,672
U.S. Treasury securities
AFS securities
Due in one year or less, Amortized Cost	19,990	49,947
Due in one year or less, Fair value	19,981	49,717
Due after one year to five years, Amortized Cost	50,044	49,837
Due after one year to five years, Fair value	50,287	47,902
Due after five to ten years, Amortized Cost	0	0
Due after five to ten years, Fair value	0	0
Due after ten years, Amortized Cost	0	0
Due after ten years, Fair value	0	0
Amortized Cost	70,034	99,784
Fair Value	70,268	97,619
State and municipal bonds and obligations
AFS securities
Due in one year or less, Amortized Cost	6,959	5,368
Due in one year or less, Fair value	6,905	5,319
Due after one year to five years, Amortized Cost	34,429	33,497
Due after one year to five years, Fair value	33,523	32,284
Due after five to ten years, Amortized Cost	50,020	51,326
Due after five to ten years, Fair value	47,666	48,743
Due after ten years, Amortized Cost	102,543	107,214
Due after ten years, Fair value	87,560	96,955
Amortized Cost	193,951	197,405
Fair Value	175,654	$ 183,301
HTM securities
Due in one year or less, Amortized Cost	0
Due in one year or less, Fair value	0
Due after one year to five years, Amortized Cost	0
Due after one year to five years, Fair value	0
Due after five to ten years, Amortized Cost	0
Due after five to ten years, Fair value	0
Due after ten years, Amortized Cost	61,706
Due after ten years, Fair value	60,968
Amortized Cost	61,706
Fair Value	60,968
Corporate bonds
HTM securities
Due in one year or less, Amortized Cost	0
Due in one year or less, Fair value	0
Due after one year to five years, Amortized Cost	0
Due after one year to five years, Fair value	0
Due after five to ten years, Amortized Cost	29,000
Due after five to ten years, Fair value	29,274
Due after ten years, Amortized Cost	0
Due after ten years, Fair value	0
Amortized Cost	29,000
Fair Value	$ 29,274