Basis of Presentation - Impact of the Adoption of CECL (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jan. 01, 2022	Dec. 31, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Allowance for loan losses			$ 31,344	$ 28,696	$ 29,091	$ 27,500
Retained earnings, net of tax	$ 737,789		657,149
Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		$ (299)	(299)
ACL - OBCEs (in Other Liabilities)		5,176
Retained earnings, net of tax		(3,648)
Post ASU Adoption | ASU 2016-13
Allowance for loan losses		31,045
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	2,935	3,321	4,018
Mortgage warehouse lines of credit | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		41	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	3,969	3,600	3,334
Residential real estate | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		275	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	11,678	13,396	12,041
Multi-family financing | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		520	520
Multi-family financing | Post ASU Adoption | ASU 2016-13
Allowance for loan losses		14,604
Healthcare financing
Allowance for loan losses			4,461	4,104	3,740	2,690
Healthcare financing | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		139	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	5,239	4,264	4,641
Commercial and commercial real estate | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		(1,277)	(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	611	632	636
Agricultural production and real estate | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		(18)	(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	$ 160	$ 138	$ 140
Consumer and margin loans | Impact from adoption of ASU | ASU 2016-13
Allowance for loan losses		21	$ 21
Consumer and margin loans | Post ASU Adoption | ASU 2016-13
Allowance for loan losses		$ 159