Regulatory Matters - Schedule of Regulatory Capital Requirements Under Banking Regulations (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital (to risk weighted assets) minimum required for capital adequacy purposes	7.00%	7.00%
CET1 capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations	6.50%	6.50%
Total capital (to risk weighted assets) minimum required for capital adequacy purposes	0.1050	0.1050
Total capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations	0.1000	0.1000
Tier 1 capital (to risk weighted assets) minimum required for capital adequacy purposes	0.0850	0.0850
Tier 1 capital (to risk weighted assets) to be well capitalized under prompt corrective action regulations	0.0800	0.0800
Tier 1 capital (to average assets) minimum required for capital adequacy purposes	0.0400	0.0400
Tier 1 capital (to average assets) to be well capitalized under prompt corrective action regulations	0.0500	0.0500
The risk-based ratios reflect the minimum requirement plus the capital conservation buffer	0.02500
Bank
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital (to risk weighted assets) actual amount	$ 1,330,001	$ 1,341,347
CET1 capital (to risk weighted assets) actual ratio	13.92%	14.23%
Total capital (to risk weighted assets) actual amount	$ 1,415,381	$ 1,412,904
Total capital (to risk weighted assets) actual ratio	0.1481	0.1499
Tier 1 capital (to risk weighted assets) actual amount	$ 1,330,001	$ 1,341,347
Tier 1 capital (to risk weighted assets) actual ratio	0.1392	0.1423
Tier 1 capital (to average assets) actual amount	$ 1,330,001	$ 1,341,347
Tier 1 capital (to average assets) actual ratio	0.1072	0.1178
Parent Company
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
CET1 capital (to risk weighted assets) actual amount	$ 1,335,967	$ 1,329,971
CET1 capital (to risk weighted assets) actual ratio	13.90%	14.03%
Total capital (to risk weighted assets) actual amount	$ 1,421,347	$ 1,415,854
Total capital (to risk weighted assets) actual ratio	0.1479	0.1494
Tier 1 capital (to risk weighted assets) actual amount	$ 1,335,967	$ 1,329,971
Tier 1 capital (to risk weighted assets) actual ratio	0.1390	0.1403
Tier 1 capital (to average assets) actual amount	$ 1,335,967	$ 1,329,971
Tier 1 capital (to average assets) actual ratio	0.1073	0.1163