Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Net income	$ 32,881,000	$ 26,463,000	$ 16,924,000
Adjustments to reconcile net income to net cash provided by operating activities:
Net discount accretion	(436,000)	(4,481,000)	(2,547,000)
Depreciation and amortization expense	5,305,000	6,573,000	5,547,000
Impairment of intangibles	0	153,000	0
Provision for loan losses	1,090,000	5,325,000	900,000
Share-based compensation	1,949,000	2,092,000	1,586,000
Gains on sales of loans originated for sale	(4,967,000)	(6,067,000)	(2,613,000)
Mortgage loans originated for sale	(197,167,000)	(207,051,000)	(112,568,000)
Proceeds from sales of loans originated for sale	204,102,000	208,987,000	108,885,000
Gains on sale of portfolio loans	0	(2,803,000)	0
Net (gain) loss on disposal of OREO and premises held for sale	(327,000)	152,000	(156,000)
Writedown of OREO and premises held for sale	0	544,000	0
Net loss on disposal of premises and equipment	22,000	2,000	139,000
Deferred income taxes	942,000	(1,973,000)	1,776,000
Investment securities (gains) losses	(638,000)	16,000	(4,749,000)
Loss (gain) on derivative terminations	514,000	(226,000)	0
Income from life insurance	(2,273,000)	(2,261,000)	(2,044,000)
Decrease (increase) in accrued interest receivable	693,000	(2,887,000)	1,248,000
Increase (decrease) in accrued interest payable and other liabilities	1,167,000	953,000	(5,291,000)
Other, net	(2,046,000)	6,660,000	2,053,000
Net cash provided by operating activities	40,811,000	30,171,000	9,090,000
Cash flows from investing activities
Proceeds from sales of AFS securities	149,038,000	0	199,429,000
Maturities, repayments and calls of AFS securities	39,082,000	56,239,000	33,265,000
Purchases of AFS securities	(195,049,000)	(26,691,000)	(190,530,000)
Net cash and cash equivalents received from acquisitions	0	0	29,442,000
Net redemptions (purchases) of restricted investments in bank stocks	3,311,000	5,621,000	(2,684,000)
Net decrease (increase) in loans	1,396,000	(349,947,000)	(46,157,000)
Proceeds from sales of portfolio loans	385,000	22,665,000	0
Purchases of bank premises and equipment	(1,254,000)	(1,303,000)	(2,911,000)
Proceeds from disposal of OREO and premises held for sale	1,078,000	4,096,000	1,318,000
Purchases of bank owned life insurance	0	(3,636,000)	(3,280,000)
Death benefit proceeds from life insurance contracts	0	391,000	571,000
Net cash (used in) provided by investing activities	(2,013,000)	(292,565,000)	18,463,000
Cash flows from financing activities
Net increase (decrease) in deposits	108,020,000	481,277,000	(71,561,000)
Net increase (decrease) in borrowings with original maturities less than 90 days	3,835,000	(135,402,000)	115,800,000
Proceeds from other short-term borrowings	0	126,599,000	20,000,000
Payments on other short-term borrowings	(56,149,000)	(131,622,000)	(116,776,000)
Settlement of terminated derivatives	(525,000)	218,000	0
Payment of subordinated notes issuance costs	0	0	(59,000)
Dividends paid	(8,280,000)	(7,610,000)	(6,150,000)
Acquisition of treasury stock	(1,869,000)	(1,170,000)	0
Treasury shares repurchased for employee taxes associated with restricted stock vesting	(514,000)	(717,000)	(1,772,000)
Proceeds from issuance of stock for option exercises and employee stock purchase plan	136,000	116,000	113,000
Net cash provided by (used in) financing activities	44,654,000	331,689,000	(60,405,000)
Net increase (decrease) in cash and cash equivalents	83,452,000	69,295,000	(32,852,000)
Cash and cash equivalents at beginning of year	125,258,000	55,963,000	88,815,000
Cash and cash equivalents at end of year	208,710,000	125,258,000	55,963,000
Supplemental disclosure of cash flow information:
Cash paid for interest	6,805,000	16,665,000	24,313,000
Cash paid for income taxes	4,400,000	550,000	0
Supplemental schedule of noncash investing and financing activities:
OREO acquired in settlement of loans	0	0	161,000
Premises and equipment transferred to held for sale	0	0	4,894,000
Lease liabilities arising from obtaining ROU assets	$ 2,865,000	$ 400,000	$ 7,380,000