CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 98,905	$ 60,582	$ 57,408
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	5,359	5,333	5,225
Provision for credit losses	3,486	55,704	7,066
Deferred income taxes	15,272	(14,530)	6,364
Stock-based compensation expense	2,352	2,150	2,469
Deferred compensation expense accrued	4,580	3,821	2,773
(Gains) losses on other real estate owned, net	(1,754)	(317)	3,361
Amortization of premiums on securities, net	1,933	969	1,561
Caplet amortization	697	551
Mark to market gains on unhedged derivatives, net	(170)
Securities (gains) losses, net	88	(2,484)	30
Loans originated for sale	(204,449)	(236,734)	(151,692)
Proceeds on sales of loans	209,003	241,553	152,633
Gains on sales of residential real estate loans	(4,397)	(4,680)	(2,571)
Gains on sales of government guaranteed portions of loans	(227)	(224)	(748)
Loss on liability extinguishment, net		3,907	436
Losses (gains) on sales and disposals of premises and equipment	1,059	(19)	753
Amortization of intangibles	2,032	2,149	2,266
Accretion of acquisition fair value adjustments, net	(1,340)	(3,271)	(4,344)
Increase in cash value of bank-owned life insurance	(1,838)	(1,904)	(1,973)
Loss (gain) on sale of subsidiary/certain assets and liabilities of subsidiary		158	(12,286)
Goodwill impairment		500	3,000
Increase in other assets	(47,006)	(9,445)	(19,152)
Increase in other liabilities	4,633	8,408	23,915
Net cash provided by operating activities	88,218	112,177	76,494
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease (increase) in federal funds sold	(3,290)	720	16,598
Net decrease (increase) in interest-bearing deposits at financial institutions	11,304	61,295	(69,984)
Proceeds from sales of other real estate owned	4,742	4,477	840
Activity in securities portfolio:
Purchases	(173,204)	(356,127)	(71,963)
Calls, maturities and redemptions	106,442	53,007	25,193
Paydowns	65,410	47,313	50,830
Sales	23,874	38,562	30,055
Activity in restricted investment securities:
Purchases	(1,280)	(4,600)	(5,859)
Redemptions	30	9,749	7,621
Proceeds from the liquidation of bank-owned life insurance		10,999
Net increase in loans/leases originated and held for investment	(433,544)	(564,748)	(320,368)
Purchase of premises and equipment	(13,981)	(4,268)	(12,429)
Proceeds from sales of premises and equipment	1,726	101	2,562
Purchase of derivatives			(4,347)
Payment for termination of derivative		(808)
Net cash transferred In sale of subsidiary		(154)	42,587
Net cash used in investing activities	(411,771)	(704,482)	(308,664)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposit accounts	323,635	716,898	335,580
Net decrease in short-term borrowings	(1,630)	(7,993)	(14,193)
Activity in Federal Home Loan Bank advances:
Term advances		125,000	25,000
Calls and maturities		(121,600)	(35,000)
Net change in short-term and overnight advances		(94,300)	(52,465)
Prepayments		(55,274)	(30,323)
Activity in other borrowings:
Calls, maturities and scheduled principal payments			(11,937)
Prepayments			(46,313)
Paydown of revolving line of credit			(9,000)
Prepayments on brokered and public time deposits		(29,153)
Prepayments of subordinated notes	(5,000)
Proceeds from subordinated notes		50,000	63,393
Payment of cash dividends on common stock	(3,793)	(3,779)	(3,767)
Proceeds from issuance of common stock, net	670	1,360	1,926
Repurchase and cancellation of shares	(14,168)	(3,779)
Net cash provided by financing activities	299,714	577,380	222,901
Net decrease in cash and due from banks	(23,839)	(14,925)	(9,269)
Cash and due from banks, beginning	61,329	76,254	85,523
Cash and due from banks, ending	37,490	61,329	76,254
Supplemental disclosure of cash flow information, cash payments for:
Interest	23,373	32,178	59,292
Income/franchise taxes	48,988	24,567	2,719
Supplemental schedule of noncash investing activities:
Change in accumulated other comprehensive income, unrealized losses on securities available for sale and derivative instruments, net	176	2,474	4,446
Change in retained earnings from adoption of ASU 2016-13	(937)
Transfers of loans to other real estate owned	2,962	51	1,086
Due to broker for purchases of securities	1,000
Increase (decrease) in the fair value of back-to-back interest rate swap assets and liabilities	(1,376)	137,752	62,483
Dividends payable	$ 935	947	947
Supplemental disclosure of cash flow information for sale of subsidiary/certain assets and certain liabilities of subsidiary:
Cash proceeds**		195	46,560
Assets Sold:
Cash and due from banks		349	3,973
Interest-bearing deposits at financial institutions			55,291
Securities held to maturity, at amortized cost			3,243
Securities available for sale, at fair value			21,874
Loans/leases receivable held for investment, net			357,931
Premises and equipment, net		19	5,612
Restricted investment securities			675
Other real estate owned, net			2,134
Other assets		2,259	3,228
Total assets sold		2,627	453,961
Liabilities Sold:
Noninterest-bearing deposits			69,802
Interest-bearing deposits			331,486
Short-term borrowings			1,158
Federal Home Loan Bank advances			15,000
Other liabilities		946	2,241
Total liabilities sold		946	419,687
Net Assets Sold		1,681	34,274
Forgiveness of earn-out consideration		880
Note receivable consideration		448
Bates Companies
Activity in restricted investment securities:
Net cash transferred In sale of subsidiary		(154)
RB&T Company
Activity in restricted investment securities:
Net cash transferred In sale of subsidiary			42,600
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Bates Companies
Supplemental schedule of noncash investing activities:
Consideration received on sale of the Bates Companies		1,523
Bates Companies
Adjustments to reconcile net income to net cash provided by operating activities:
Goodwill impairment		$ 500	$ 3,000