Nature of Operations and Summary of Significant Accounting Policies - Impact of the Adoption of CECL (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Allowance for loan losses			$ 31,344	$ 27,500	$ 15,842
Retained earnings, net of tax	$ 832,871		657,149
Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		$ (300)
ACL - OBCEs (in Other Liabilities)		5,176
Retained earnings, net of tax		(3,648)
Post ASU Adoption \| ASU 2016-13
ACL - OBCEs (in Other Liabilities)		5,176
Retained earnings, net of tax		653,501
Mortgage warehouse lines of credit
Allowance for loan losses			1,955	4,018	1,913
Mortgage warehouse lines of credit \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		41
Mortgage warehouse lines of credit \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		1,996
Residential real estate
Allowance for loan losses			4,170	3,334	2,042
Residential real estate \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		275
Residential real estate \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		4,445
Multi-family financing
Allowance for loan losses			14,084	12,140	5,784
Multi-family financing \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		520
Multi-family financing \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		14,604
Healthcare financing
Allowance for loan losses			4,461	2,591	1,234
Healthcare financing \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		139
Healthcare financing \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		4,600
Commercial and commercial real estate
Allowance for loan losses			5,879	4,641	4,173
Commercial and commercial real estate \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		(1,277)
Commercial and commercial real estate \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		4,602
Agricultural production and real estate
Allowance for loan losses			657	636	523
Agricultural production and real estate \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		(18)
Agricultural production and real estate \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		639
Consumer and margin loans
Allowance for loan losses			138	$ 140	$ 173
Consumer and margin loans \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		21
Consumer and margin loans \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		159
Healthcare loans
Allowance for loan losses			$ 31,344
Healthcare loans \| Impact from adoption of ASU \| ASU 2016-13
Allowance for loan losses		(299)
Healthcare loans \| Post ASU Adoption \| ASU 2016-13
Allowance for loan losses		$ 31,045