Securities - Schedule of Fair Value of Available for Sale Securities by Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
AFS securities
Due in one year or less, Amortized Cost	$ 55,876	$ 213
Due in one year or less, Fair value	55,593	209
Due after one year to five years, Amortized Cost	560,992	651,654
Due after one year to five years, Fair value	522,979	603,469
Due after five to ten years, Amortized Cost	335,084	446,531
Due after five to ten years, Fair value	296,864	391,693
Due after ten years, Amortized Cost	3,826,692	4,063,506
Due after ten years, Fair value	3,146,162	3,412,150
Amortized Cost	4,778,644	5,161,904
Fair Value	4,021,598	4,407,521
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	133,168	80,014
Due after one year to five years, Fair value	121,471	72,952
Due after five to ten years, Amortized Cost	55,838	114,955
Due after five to ten years, Fair value	47,982	101,551
Due after ten years, Amortized Cost	231,709	254,752
Due after ten years, Fair value	202,271	230,319
Amortized Cost	420,715	449,721
Fair Value	371,724	404,822
Total
Due in one year or less, Amortized Cost	55,876	213
Due in one year or less, Fair value	55,593	209
Due after one year to five years, Amortized Cost	694,160	731,668
Due after one year to five years, Fair value	644,450	676,421
Due after five to ten years, Amortized Cost	390,922	561,486
Due after five to ten years, Fair value	344,846	493,244
Due after ten years, Amortized Cost	4,058,401	4,318,258
Due after ten years, Fair value	3,348,433	3,642,469
Amortized Cost	5,199,359	5,611,625
Fair Value	4,393,322	4,812,343
Government-sponsored residential mortgage-backed securities
AFS securities
Due in one year or less, Amortized Cost	561	0
Due in one year or less, Fair value	557	0
Due after one year to five years, Amortized Cost	21,535	29,288
Due after one year to five years, Fair value	20,940	28,188
Due after five to ten years, Amortized Cost	13,212	22,735
Due after five to ten years, Fair value	12,268	21,235
Due after ten years, Amortized Cost	3,064,020	3,250,142
Due after ten years, Fair value	2,528,130	2,731,215
Amortized Cost	3,099,328	3,302,165
Fair Value	2,561,895	2,780,638
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	231,709	254,752
Due after ten years, Fair value	202,271	230,319
Amortized Cost	231,709	254,752
Fair Value	202,271	230,319
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	436,515	256,229
Due after one year to five years, Fair value	404,181	234,725
Due after five to ten years, Amortized Cost	270,546	379,749
Due after five to ten years, Fair value	235,853	327,198
Due after ten years, Amortized Cost	655,458	690,051
Due after ten years, Fair value	521,077	562,453
Amortized Cost	1,362,519	1,326,029
Fair Value	1,161,111	1,124,376
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	133,168	80,014
Due after one year to five years, Fair value	121,471	72,952
Due after five to ten years, Amortized Cost	55,838	114,955
Due after five to ten years, Fair value	47,982	101,551
Due after ten years, Amortized Cost	0	0
Due after ten years, Fair value	0	0
Amortized Cost	189,006	194,969
Fair Value	169,453	174,503
U.S. Agency bonds
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	19,608	236,454
Due after one year to five years, Fair value	17,672	216,011
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	19,608	236,454
Fair Value	17,672	216,011
U.S. Treasury securities
AFS securities
Due in one year or less, Amortized Cost	49,947	0
Due in one year or less, Fair value	49,717	0
Due after one year to five years, Amortized Cost	49,837	99,552
Due after one year to five years, Fair value	47,902	95,152
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	99,784	99,552
Fair Value	97,619	95,152
State and municipal bonds and obligations
AFS securities
Due in one year or less, Amortized Cost	5,368	213
Due in one year or less, Fair value	5,319	209
Due after one year to five years, Amortized Cost	33,497	30,131
Due after one year to five years, Fair value	32,284	29,393
Due after five to ten years, Amortized Cost	51,326	44,047
Due after five to ten years, Fair value	48,743	43,260
Due after ten years, Amortized Cost	107,214	123,313
Due after ten years, Fair value	96,955	118,482
Amortized Cost	197,405	197,704
Fair Value	$ 183,301	$ 191,344