Consolidated Statements Of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 48,862,000	$ 39,526,000	$ 33,526,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,213,000	6,477,000	6,177,000
Net amortization of premiums on securities	2,069,000	2,456,000	3,298,000
Provision for loan losses	8,044,000	8,934,000	13,361,000
Share-based compensation	1,406,000	1,301,000	1,174,000
Deferred income tax expense (benefit)	369,000	(10,480,000)	12,403,000
Proceeds from sale of loans held for sale	41,479,000	30,547,000	14,555,000
Originations of loans held for sale	(41,626,000)	(29,901,000)	(15,847,000)
Income on company owned life insurance	(1,758,000)	(1,793,000)	(1,781,000)
Net gain on sale of loans held for sale	(1,352,000)	(796,000)	(376,000)
Net (gain) loss on investment securities	(1,677,000)	127,000	(1,260,000)
Goodwill impairment	0	2,350,000	1,575,000
Net gain on other assets	(29,000)	(50,000)	(37,000)
(Increase) decrease in other assets	(21,263,000)	13,376,000	(24,505,000)
Increase in other liabilities	14,973,000	3,065,000	4,016,000
Net cash provided by operating activities	57,710,000	65,139,000	46,279,000
Cash flows from investing activities:
Purchases of available for sale securities	(195,660,000)	(44,919,000)	(86,434,000)
Purchases of held to maturity securities	(23,494,000)	(28,017,000)	(71,479,000)
Proceeds from principal payments, maturities and calls on available for sale securities	82,358,000	90,114,000	51,978,000
Proceeds from principal payments, maturities and calls on held to maturity securities	83,508,000	96,211,000	96,376,000
Proceeds from sales of securities available for sale	178,059,000	29,851,000	50,084,000
Net loan originations	(167,234,000)	(361,915,000)	(404,905,000)
Loans sold to others	21,077,000
Purchases of company owned life insurance, net of proceeds received	(68,000)	(35,000)	(52,000)
Proceeds from sales of other assets	360,000	590,000	234,000
Purchases of premises and equipment	(3,639,000)	(2,842,000)	(7,740,000)
Cash consideration paid for acquisition, net of cash acquired		(4,447,000)	(676,000)
Net cash used in investing activities	(24,733,000)	(225,409,000)	(372,614,000)
Cash flows from financing activities:
Net increase in deposits	188,768,000	156,733,000	214,952,000
Net increase in short-term borrowings	(194,000,000)	23,300,000	114,700,000
Repurchase of preferred stock		(1,000)	(9,000)
Proceeds from issuance of common stock			38,303,000
Purchases of common stock for treasury	(293,000)	(113,000)	(148,000)
Proceeds from stock options exercised		320,000	413,000
Cash dividends paid to preferred shareholders	(1,461,000)	(1,462,000)	(1,462,000)
Cash dividends paid to common shareholders	(15,799,000)	(14,947,000)	(12,496,000)
Net cash (used in) provided by financing activities	(22,785,000)	163,830,000	354,253,000
Net increase in cash and cash equivalents	10,192,000	3,560,000	27,918,000
Cash and cash equivalents, beginning of period	102,755,000	99,195,000	71,277,000
Cash and cash equivalents, end of period	$ 112,947,000	$ 102,755,000	$ 99,195,000