Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Interest and fees on loans, including loans held for sale	$ 40,689	$ 40,465
Interest and dividends on securities
Taxable	2,575	3,046
Tax exempt	739	527
Interest and dividends on Federal Reserve Bank and Federal Home Loan Bank stock	124	140
Interest on Federal Reserve Bank deposits	76	496
Other, including interest on federal funds sold	8	25
Total interest income	44,211	44,699
Interest expense:
Interest on deposits	3,387	6,942
Interest on repurchase agreements and federal funds purchased	304	1,004
Interest on long-term debt	278	509
Total interest expense	3,969	8,455
Net interest income	40,242	36,244
Provision for credit losses	(2,499)	12,707
Net interest income after provision for credit losses	42,741	23,537
Noninterest income:
Service charges on deposit accounts	6,022	5,916
Gains on sales of loans, net	2,433	483
Trust and wealth management income	2,951	2,884
Loan related fees	2,270	95
Bank owned life insurance	573	573
Brokerage revenue	457	372
Securities gains (losses)	(168)	249
Other noninterest income	1,039	949
Total noninterest income	15,577	11,521
Noninterest expense:
Officer salaries and employee benefits	3,738	2,751
Other salaries and employee benefits	13,095	12,280
Occupancy, net	2,195	1,985
Equipment	633	721
Data processing	2,159	1,978
Bank franchise tax	360	1,812
Legal fees	352	477
Professional fees	541	569
Advertising and marketing	722	634
FDIC insurance	326	147
Other real estate owned provision and expense	318	869
Repossession expense	199	135
Amortization of limited partnership investments	837	888
Other noninterest expense	2,835	2,975
Total noninterest expense	28,310	28,221
Income before income taxes	30,008	6,837
Income taxes	6,390	258
Net income	23,618	6,579
Unrealized holding gains (losses) on debt securities available-for-sale:
Unrealized holding gains (losses) arising during the period	(13,456)	2,147
Less: Reclassification adjustments for realized gains on debt securities included in net income	60	481
Tax expense (benefit)	(3,514)	433
Other comprehensive income (loss), net of tax	(10,002)	1,233
Comprehensive income	$ 13,616	$ 7,812
Basic earnings per share (in dollars per share)	$ 1.33	$ 0.37
Diluted earnings per share (in dollars per share)	$ 1.33	$ 0.37
Weighted average shares outstanding-basic (in shares)	17,774	17,752
Weighted average shares outstanding-diluted (in shares)	17,787	17,763