Loans and Allowance for Credit Losses on Loans - Aging Analysis Of The Recorded Investment In Loans (Details) $ in Thousands	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)
Aging analysis of loan portfolio
Loans	$ 10,199,553	$ 7,470,872
Number of delinquent loans classified as held for sale \| loan	1
Loan as held for sale	$ 16,500
Total Past Due
Aging analysis of loan portfolio
Loans	183,529	39,752
30-59 Days Past Due
Aging analysis of loan portfolio
Loans	42,975	13,721
60-89 Days Past Due
Aging analysis of loan portfolio
Loans	58,737	176
Greater Than 90 Days
Aging analysis of loan portfolio
Loans	81,817	25,855
Current.
Aging analysis of loan portfolio
Loans	10,016,024	7,431,120
Mortgage warehouse lines of credit
Aging analysis of loan portfolio
Loans	752,468	464,785
Mortgage warehouse lines of credit \| Current.
Aging analysis of loan portfolio
Loans	752,468	464,785
Residential real estate
Aging analysis of loan portfolio
Loans	1,324,305	1,178,401
Residential real estate \| Total Past Due
Aging analysis of loan portfolio
Loans	6,936	4,477
Residential real estate \| 30-59 Days Past Due
Aging analysis of loan portfolio
Loans	4,557	4,053
Residential real estate \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans		152
Residential real estate \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	2,379	272
Residential real estate \| Current.
Aging analysis of loan portfolio
Loans	1,317,369	1,173,924
Healthcare financing
Aging analysis of loan portfolio
Loans	2,356,689	1,604,341
Healthcare financing \| Total Past Due
Aging analysis of loan portfolio
Loans	83,274	21,783
Healthcare financing \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans	47,275
Healthcare financing \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	35,999	21,783
Healthcare financing \| Current.
Aging analysis of loan portfolio
Loans	2,273,415	1,582,558
Multi-family financing
Aging analysis of loan portfolio
Loans	4,006,160	3,135,535
Multi-family financing \| Total Past Due
Aging analysis of loan portfolio
Loans	88,882
Multi-family financing \| 30-59 Days Past Due
Aging analysis of loan portfolio
Loans	38,218
Multi-family financing \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans	11,055
Multi-family financing \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	39,609
Multi-family financing \| Current.
Aging analysis of loan portfolio
Loans	3,917,278	3,135,535
Commercial and commercial real estate
Aging analysis of loan portfolio
Loans	1,643,081	978,661
Commercial and commercial real estate \| Total Past Due
Aging analysis of loan portfolio
Loans	4,230	8,537
Commercial and commercial real estate \| 30-59 Days Past Due
Aging analysis of loan portfolio
Loans	172	4,759
Commercial and commercial real estate \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans	393
Commercial and commercial real estate \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	3,665	3,778
Commercial and commercial real estate \| Current.
Aging analysis of loan portfolio
Loans	1,638,851	970,124
Agricultural production and real estate
Aging analysis of loan portfolio
Loans	103,150	95,651
Agricultural production and real estate \| Total Past Due
Aging analysis of loan portfolio
Loans	185	4,903
Agricultural production and real estate \| 30-59 Days Past Due
Aging analysis of loan portfolio
Loans	27	4,903
Agricultural production and real estate \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans	11
Agricultural production and real estate \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	147
Agricultural production and real estate \| Current.
Aging analysis of loan portfolio
Loans	102,965	90,748
Consumer and margin loans
Aging analysis of loan portfolio
Loans	13,700	13,498
Consumer and margin loans \| Total Past Due
Aging analysis of loan portfolio
Loans	22	52
Consumer and margin loans \| 30-59 Days Past Due
Aging analysis of loan portfolio
Loans	1	6
Consumer and margin loans \| 60-89 Days Past Due
Aging analysis of loan portfolio
Loans	3	24
Consumer and margin loans \| Greater Than 90 Days
Aging analysis of loan portfolio
Loans	18	22
Consumer and margin loans \| Current.
Aging analysis of loan portfolio
Loans	$ 13,678	$ 13,446