Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest and dividend income:
Loans, including fees	$ 285,375	$ 242,269	$ 233,721
Investments:
Taxable securities	59,395	29,361	27,627
Tax exempt securities	5,199	3,568	3,566
Dividends	1,137	991	1,032
Interest bearing cash at Federal Reserve and other banks	4,399	858	1,238
Total interest and dividend income	355,505	277,047	267,184
Interest expense:
Deposits	4,689	3,318	6,885
Other borrowings	421	22	17
Junior subordinated debt	4,419	2,168	2,555
Total interest expense	9,529	5,508	9,457
Net interest income	345,976	271,539	257,727
Provision for (benefit from) credit losses	18,470	(6,775)	42,813
Net interest income after provision for (benefit from) credit losses	327,506	278,314	214,914
Noninterest income:
Service charges and fees	49,765	43,948	37,981
Commissions on sale of non-deposit investment products	3,986	3,668	2,989
Increase in cash value of life insurance	2,858	2,775	2,949
Gain on sale of loans	2,342	9,580	9,122
Gain on sale of investment securities	0	0	7
Other	4,095	3,693	2,146
Total noninterest income	63,046	63,664	55,194
Noninterest expense:
Salaries and related benefits	129,852	106,351	112,121
Other	86,793	71,924	70,637
Total noninterest expense	216,645	178,275	182,758
Income before income taxes	173,907	163,703	87,350
Provision for income taxes	48,488	46,048	22,536
Net income	$ 125,419	$ 117,655	$ 64,814
Earnings per share:
Basic (in USD per share)	$ 3.85	$ 3.96	$ 2.17
Diluted (in USD per share)	$ 3.83	$ 3.94	$ 2.16