Capital Adequacy - Schedule of Company’s and the Bank’s Capital Ratios (Details) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)
Parent Company
Total risk-based capital (to risk-weighted assets):
Total capital (to risk-weighted assets), actual amount	$ 3,633,280	$ 3,083,839
Total capital (to risk-weighted assets), actual ratio	0.2929	0.2488
Total capital (to risk-weighted assets), minimum capital requirement amount	$ 992,260	$ 991,777
Total capital (to risk-weighted assets), minimum capital requirement ratio	0.0800	0.0800
Tier 1 capital (to risk-weighted assets):
Actual amount Tier I Capital (to risk-weighted assets), actual amount	$ 3,483,247	$ 2,929,055
Tier I Capital (to risk-weighted assets), actual ratio	0.2808	0.2363
Tier I Capital (to risk-weighted assets), minimum capital requirement amount	$ 744,195	$ 743,833
Tier I Capital (to risk-weighted assets), minimum capital requirement ratio	0.0600	0.0600
Tier 1 common equity capital (to risk-weighted assets):
Tier 1 common equity capital (to risk-weighted assets), actual amount	$ 3,483,247	$ 2,929,055
Tier 1 common equity capital (to risk-weighted assets), actual ratio	0.2808	0.2363
Tier 1 common equity capital (to risk-weighted assets), minimum capital requirement Amount	$ 558,146	$ 557,875
Tier 1 common equity capital (to risk-weighted assets), minimum capital requirement ratio	0.0450	0.0450
Tier 1 capital (to average assets):
Tier 1 capital (to average assets), actual amount	$ 3,483,247	$ 2,929,055
Tier 1 capital (to average assets), actual ratio	0.1794	0.1569
Tier 1 capital (to average assets), Minimum capital adequacy requirement Amount	$ 776,720	$ 746,578
Tier 1 capital (to average assets), minimum capital adequacy requirement ratio	0.0400	0.0400
Subsidiaries
Total risk-based capital (to risk-weighted assets):
Total capital (to risk-weighted assets), actual amount	$ 1,742,888	$ 1,706,617
Total capital (to risk-weighted assets), actual ratio	0.1409	0.1381
Total capital (to risk-weighted assets), minimum capital requirement amount	$ 989,246	$ 1,028,943
Total capital (to risk-weighted assets), minimum capital requirement ratio	0.0800	0.0800
Total capital (to risk-weighted assets), well-capitalized capital requirement amount	$ 1,236,557	$ 1,286,179
Total capital (to risk-weighted assets), well-capitalized capital requirement ratio	0.1000	0.1000
Tier 1 capital (to risk-weighted assets):
Actual amount Tier I Capital (to risk-weighted assets), actual amount	$ 1,592,855	$ 1,551,833
Tier I Capital (to risk-weighted assets), actual ratio	0.1288	0.1256
Tier I Capital (to risk-weighted assets), minimum capital requirement amount	$ 741,934	$ 771,707
Tier I Capital (to risk-weighted assets), minimum capital requirement ratio	0.0600	0.0600
Tier I Capital (to risk-weighted assets), well-capitalized capital requirement amount	$ 989,246	$ 1,028,943
Tier I Capital (to risk-weighted assets), well-capitalized capital requirement ratio	0.0800	0.0800
Tier 1 common equity capital (to risk-weighted assets):
Tier 1 common equity capital (to risk-weighted assets), actual amount	$ 1,592,855	$ 1,551,833
Tier 1 common equity capital (to risk-weighted assets), actual ratio	0.1288	0.1256
Tier 1 common equity capital (to risk-weighted assets), minimum capital requirement Amount	$ 556,451	$ 578,781
Tier 1 common equity capital (to risk-weighted assets), minimum capital requirement ratio	0.0450	0.0450
Tier 1 common equity capital (to risk-weighted assets), well-capitalized capital requirement amount	$ 803,762	$ 836,016
Tier 1 common equity capital (to risk-weighted assets), well-capitalized capital requirement ratio	0.0650	0.0650
Tier 1 capital (to average assets):
Tier 1 capital (to average assets), actual amount	$ 1,592,855	$ 1,551,833
Tier 1 capital (to average assets), actual ratio	0.0821	0.0833
Tier 1 capital (to average assets), Minimum capital adequacy requirement Amount	$ 776,286	$ 745,433
Tier 1 capital (to average assets), minimum capital adequacy requirement ratio	0.0400	0.0400
Tier 1 capital (to average assets), well-capitalized requirement amount	$ 970,358	$ 931,792
Tier 1 capital (to average assets), well-capitalized requirement ratio	0.0500	0.0500