Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Interest and dividend income
Loans, including fees	$ 57,210	$ 36,366
Loans held-for-sale	12	57
Securities:
Taxable	10,735	5,169
Tax exempt	1,337	1,317
Dividends from FHLBC and FRBC stock	280	153
Interest bearing deposits with financial institutions	585	269
Total interest and dividend income	70,159	43,331
Interest expense
Savings, NOW, and money market deposits	1,149	397
Time deposits	664	277
Securities sold under repurchase agreements	9	11
Other short-term borrowings	2,345
Junior subordinated debentures	279	280
Subordinated debentures	546	546
Senior notes	994	485
Notes payable and other borrowings	87	103
Total interest expense	6,073	2,099
Net interest and dividend income	64,086	41,232
Provision for credit losses	3,501
Net interest and dividend income after provision for credit losses	60,585	41,232
Noninterest income
Mortgage servicing rights mark to market (loss) gain	(525)	2,978
Net gain on sales of mortgage loans	306	1,495
Securities losses, net	(1,675)
Change in cash surrender value of BOLI	242	124
Card related income	2,244	2,574
Other income	1,489	862
Total noninterest income	7,350	13,463
Noninterest expense
Salaries and employee benefits	22,248	19,967
Occupancy, furniture and equipment	3,475	3,699
Computer and data processing	1,774	6,268
FDIC insurance	584	410
Net teller & bill paying	502	1,907
General bank insurance	305	315
Amortization of core deposit intangible	624	665
Advertising expense	142	182
Card related expense	1,216	534
Legal fees	319	257
Consulting & management fees	790	616
Other real estate expense, net	306	(12)
Other expense	3,637	3,444
Total noninterest expense	35,922	38,252
Income before income taxes	32,013	16,443
Provision for income taxes	8,406	4,423
Net income	$ 23,607	$ 12,020
Basic earnings per share	$ 0.53	$ 0.27
Diluted earnings per share	0.52	0.27
Dividends declared per share	$ 0.05	$ 0.05
Wealth management
Noninterest income
Service charges on deposits	$ 2,270	$ 2,698
Service charges on deposits
Noninterest income
Service charges on deposits	2,424	2,074
Secondary mortgage fees
Noninterest income
Service charges on deposits	59	139
Mortgage servicing income
Noninterest income
Service charges on deposits	$ 516	$ 519