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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
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Loans and Allowance for Credit Losses on Loans - Amortized cost basis and ACL (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	$ 10,199,553	$ 7,470,872
ACL-Loans	71,752	44,014	$ 31,344	$ 27,500
Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	128,627	64,825
ACL-Loans	7,964	1,181
Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	122,334	58,927
Accounts Receivable Or Equipment
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	3,603	4,917
Other Collateralized Assets
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	2,690	981
Mortgage warehouse lines of credit
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	752,468	464,785
ACL-Loans	2,070	1,249	1,955	4,018
Residential real estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	1,324,305	1,178,401
ACL-Loans	7,323	7,029	4,170	3,334
Residential real estate \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	1,560	246
ACL-Loans	21	31
Residential real estate \| Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	1,557	237
Residential real estate \| Other Collateralized Assets
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	3	9
Multi-family financing
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	4,006,160	3,135,535
ACL-Loans	26,874	16,781	14,084	12,140
Multi-family financing \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	46,575	36,760
ACL-Loans	521	173
Multi-family financing \| Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	46,575	36,760
Healthcare financing
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	2,356,689	1,604,341
ACL-Loans	22,454	9,882	4,461	2,591
Healthcare financing \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	73,909	21,783
ACL-Loans	6,289	134
Healthcare financing \| Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	73,909	21,783
Commercial and commercial real estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	1,643,081	978,661
ACL-Loans	12,243	8,326	5,879	4,641
Commercial and commercial real estate \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	6,433	5,883
ACL-Loans	1,132	842
Commercial and commercial real estate \| Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	146
Commercial and commercial real estate \| Accounts Receivable Or Equipment
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	3,603	4,917
Commercial and commercial real estate \| Other Collateralized Assets
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	2,684	966
Agricultural production and real estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	103,150	95,651
ACL-Loans	619	565	657	636
Agricultural production and real estate \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	147	147
ACL-Loans	1	1
Agricultural production and real estate \| Real Estate
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	147	147
Consumer and margin loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	13,700	13,498
ACL-Loans	169	182	$ 138	$ 140
Consumer and margin loans \| Collateral Dependent Loans
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	3	6
Consumer and margin loans \| Other Collateralized Assets
Loans and Allowance for Credit Losses on Loans
Amortized Cost Basis	$ 3	$ 6