CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans	$ 144,803	$ 158,450	$ 170,288
Taxable investment securities	13,312	4,172	167
Tax-exempt investment securities	37,730	33,416	16,856
MBS	19,534	34,319	50,486
FHLB stock and equity investments	530	1,233	1,654
Other interest earning assets	78	238	1,336
Total interest income	215,987	231,828	240,787
Interest expense:
Deposits	9,404	24,648	44,565
FHLB borrowings	7,348	11,397	17,719
Subordinated notes	8,246	6,301	5,661
Trust preferred subordinated debentures	1,390	1,829	2,775
Other borrowings	42	388	262
Total interest expense	26,430	44,563	70,982
Net interest income	189,557	187,265	169,805
Provision for (reversal of) credit losses	(16,964)	20,201	5,101
Net interest income after provision for credit losses	206,521	167,064	164,704
Noninterest income:
Deposit services	26,368	24,359	26,038
Net gain (loss) on sale of securities available for sale	3,862	8,257	756
Gain on sale of loans	1,641	2,772	509
Trust fees	5,959	5,133	6,269
BOLI	2,618	2,554	2,307
Brokerage services	3,383	2,271	2,080
Other	5,505	4,386	4,409
Total noninterest income	49,336	49,732	42,368
Noninterest expense:
Salaries and employee benefits	79,892	77,225	73,731
Net occupancy	14,239	14,369	13,128
Advertising, travel & entertainment	2,367	2,147	2,964
ATM expense	1,166	1,018	894
Professional fees	4,015	4,224	4,717
Software and data processing	5,675	4,957	4,537
Communications	2,233	1,984	1,941
FDIC insurance	1,807	1,124	859
Amortization of intangibles	2,849	3,617	4,418
Loss on redemption of subordinated notes	1,118	0	0
Other	9,669	12,642	12,108
Total noninterest expense	125,030	123,307	119,297
Income before income tax expense	130,827	93,489	87,775
Income tax expense	17,426	11,336	13,221
Net income	$ 113,401	$ 82,153	$ 74,554
Earnings per common share - basic (in dollars per share)	$ 3.48	$ 2.47	$ 2.21
Earnings per common share - diluted (in dollars per share)	3.47	2.47	2.20
Cash dividends paid per common share	$ 1.37	$ 1.30	$ 1.26