Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Income
Loans, including fees	$ 78,133	$ 86,425	$ 85,830
Taxable	13,001	7,798	5,576
Exempt from federal income taxes	925	949	798
Other	598	930	1,096
Total interest income	92,657	96,102	93,300
Interest Expense
Deposits	3,661	8,843	13,334
Short-term borrowings			1,805
Long-term debt	1,897	3,413	3,610
Total interest expense	5,558	12,256	18,749
Net interest income	87,099	83,846	74,551
Provision for loan losses	(3,500)	10,900	7,312
Net interest income after provision for loan losses	90,599	72,946	67,239
Noninterest Income
Mortgage banking	48,502	61,641	25,805
Net gains (losses) on investment securities	125	2,737	357
Other	4,604	5,177	6,947
Total noninterest income	147,387	149,371	114,194
Noninterest Expense
Compensation	93,386	89,206	74,018
Employee taxes and benefits	22,033	20,050	19,456
Occupancy and equipment expense	8,148	10,058	10,751
Business services, software and technology expense	20,486	19,135	16,381
Intangible amortization expense	4,380	3,961	4,081
Professional fees and assessments	6,292	4,834	4,011
Marketing and business development	3,182	3,133	3,162
Supplies and postage	2,361	2,174	2,722
Travel	442	359	1,787
Mortgage and lending expenses	4,250	5,707	2,853
Other	3,949	5,182	3,315
Total noninterest expense	168,909	163,799	142,537
Income before income taxes	69,077	58,518	38,896
Income tax expense	16,396	13,843	9,356
Net income	$ 52,681	$ 44,675	$ 29,540
Per Common Share Data
Basic earnings per common share	$ 3.02	$ 2.57	$ 1.96
Diluted earnings per common share	2.97	2.52	1.91
Dividends declared per common share	$ 0.63	$ 0.60	$ 0.57
Average common shares outstanding	17,189	17,106	14,736
Diluted average common shares outstanding	17,486	17,438	15,093
Retirement and Benefit Services
Noninterest Income
Revenue	$ 71,709	$ 60,956	$ 63,811
Wealth Management
Noninterest Income
Revenue	21,052	17,451	15,502
Deposit Account
Noninterest Income
Revenue	$ 1,395	$ 1,409	$ 1,772