Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Interest and dividend income
Loans, including fees	$ 61,954	$ 62,151	$ 123,549	$ 124,824
Loans held-for-sale	39	19	61	33
Securities:
Taxable	9,959	8,552	19,186	16,644
Tax exempt	1,229	1,292	2,489	2,598
Dividends from FHLBC and FRBC stock	273	584	746	1,219
Interest bearing deposits with financial institutions	1,784	625	2,772	1,235
Total interest and dividend income	75,238	73,223	148,803	146,553
Interest expense
Savings, NOW, and money market deposits	5,606	4,317	10,519	8,354
Time deposits	4,508	4,961	9,337	9,002
Securities sold under repurchase agreements	56	83	124	169
Other short-term borrowings		3,338	17	7,895
Junior subordinated debentures	288	288	576	568
Subordinated debentures	546	546	1,092	1,092
Total interest expense	11,004	13,533	21,665	27,080
Net interest and dividend income	64,234	59,690	127,138	119,473
Provision for credit losses	2,500	3,750	4,900	7,250
Net interest and dividend income after provision for credit losses	61,734	55,940	122,238	112,223
Noninterest income
Mortgage servicing rights mark to market loss	(531)	(238)	(1,101)	(144)
Net gain on sales of mortgage loans	550	468	1,014	782
Securities gains, net				1
Change in cash surrender value of BOLI	690	820	1,188	1,992
Death benefit realized on BOLI		893		893
Card related income	2,716	2,577	5,128	4,953
Other income	1,026	742	2,062	1,772
Total noninterest income	10,898	11,127	21,099	21,628
Noninterest expense
Salaries and employee benefits	26,950	23,424	53,943	47,736
Occupancy, furniture and equipment	4,477	3,899	9,025	7,826
Computer and data processing	2,692	2,184	5,040	4,439
FDIC insurance	642	616	1,270	1,283
Net teller & bill paying	670	578	1,328	1,099
General bank insurance	328	312	658	621
Amortization of core deposit intangible	1,022	574	2,059	1,154
Advertising expense	320	472	487	664
Card related expense	1,489	1,323	2,869	2,600
Legal fees	388	238	860	464
Consulting & management fees	527	797	953	1,133
Other real estate expense, net	35	(87)	1,908	(41)
Other expense	3,879	3,547	7,524	7,140
Total noninterest expense	43,419	37,877	87,924	76,118
Income before income taxes	29,213	29,190	55,413	57,733
Provision for income taxes	7,391	7,299	13,761	14,530
Net income	$ 21,822	$ 21,891	$ 41,652	$ 43,203
Basic earnings per share	$ 0.49	$ 0.48	$ 0.93	$ 0.96
Diluted earnings per share	0.48	0.48	0.91	0.95
Dividends declared per share	$ 0.06	$ 0.05	$ 0.12	$ 0.1
Wealth management
Noninterest income
Service charges on deposits	$ 3,103	$ 2,779	$ 6,192	$ 5,340
Service charges on deposits
Noninterest income
Service charges on deposits	2,788	2,508	5,507	4,923
Secondary mortgage fees
Noninterest income
Service charges on deposits	84	65	157	115
Mortgage servicing income
Noninterest income
Service charges on deposits	$ 472	$ 513	$ 952	$ 1,001