CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating activities:
Net income		$ 47,434,000	$ 44,170,000	$ 36,497,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		3,122,000	3,127,000	3,275,000
Amortization of premium and accretion of discount on securities, net		1,782,000	1,399,000	1,697,000
Amortization of restricted stock		5,909,000	4,445,000	3,741,000
Amortization of intangible assets		1,043,000	1,187,000	321,000
Amortization of subordinated debt costs		224,000	169,000	135,000
Provision for loan and lease losses		4,000,000	3,550,000	5,850,000
Valuation allowance on other real estate owned			232,000
Stock-based compensation and employee stock purchase plan expense		158,000	189,000	122,000
Deferred tax expense		10,013,000	17,042,000	14,118,000
Fair value adjustment for equity security		(117,000)	105,000
Loss on sale of securities, available for sale, net			288,000
Proceeds from sales of loans held for sale	[1]	73,709,000	44,483,000	45,763,000
Loans originated for sale	[1]	(75,588,000)	(44,075,000)	(43,381,000)
Gain on loans held for sale	[1]	(2,866,000)	(1,970,000)	(1,965,000)
Loss/(gain) on sale of loans held for sale at lower of cost or fair value		10,000	4,392,000	(412,000)
Loss on sale of other real estate owned			58,000
Gain on death benefit			(3,000,000)	(62,000)
Increase in cash surrender value of life insurance, net of split dollar liability		(775,000)	(767,000)	(818,000)
Decrease/(increase) in accrued interest receivable		328,000	(1,362,000)	(1,299,000)
Decrease/(increase) in other assets		5,111,000	(8,485,000)	(9,977,000)
Increase/(decrease) in accrued expenses and other liabilities		12,799,000	(929,000)	2,330,000
Net cash provided by operating activities		86,296,000	64,248,000	55,935,000
Investing activities:
Principal repayments, maturities and calls of securities available for sale		208,625,000	79,313,000	66,450,000
Redemptions for FHLB & FRB stock		34,427,000	87,602,000	40,561,000
Sales of securities available for sale			19,542,000
Purchase of securities available for sale		(209,971,000)	(156,893,000)	(91,561,000)
Purchase of equity securities		(6,000,000)
Purchase of FHLB & FRB stock		(39,962,000)	(92,758,000)	(40,126,000)
Proceeds from sale of loans held for sale at lower of cost or fair value		4,984,000	126,898,000	109,454,000
Net increase in loans, net of participations sold		(478,099,000)	(358,652,000)	(505,046,000)
Sales of other real estate owned		336,000	1,800,000	534,000
Purchases of premises and equipment		(1,705,000)	(1,059,000)	(2,380,000)
Purchase of wealth management company		(2,600,000)	(3,500,000)	(13,500,000)
Proceeds from death benefit		3,000,000		100,000
Net cash used in investing activities		(486,965,000)	(297,707,000)	(435,514,000)
Financing activities:
Net increase in deposits		348,171,000	196,986,000	286,517,000
Net increase in short-term borrowings		128,100,000
Proceeds from FHLB advances			105,000,000
Repayments of FHLB advances		(3,000,000)	(34,898,000)	(23,897,000)
Dividends paid on common stock		(3,865,000)	(3,712,000)	(3,548,000)
Exercise of stock options, net stock swaps		251,000	275,000	690,000
Restricted stock repurchased on vesting to pay taxes		(1,106,000)	(1,540,000)	(1,826,000)
Proceeds from issuance of subordinated debt				34,125,000
Sale of common shares (Dividend Reinvestment Program)			16,677,000	36,588,000
Issuance of shares for employee’s savings and investment plan			1,039,000	889,000
Issuance of shares for employee stock purchase plan		532,000	958,000	797,000
Purchase of treasury shares		(21,002,000)
Net cash provided by financing activities		448,081,000	280,785,000	330,335,000
Net increase/(decrease) in cash and cash equivalents		47,412,000	47,326,000	(49,244,000)
Cash and cash equivalents at beginning of year		160,773,000	113,447,000	162,691,000
Cash and cash equivalents at end of year		208,185,000	160,773,000	113,447,000
Cash paid during the year for:
Interest		60,293,000	42,768,000	26,506,000
Income taxes, net		3,595,000	3,605,000	11,597,000
Transfer of loans to loans held for sale		15,064,000	137,317,000
Transfer of loans to other real estate owned		386,000		2,090,000
Security purchase settled in subsequent period		7,959,000
Acquisitions (Note 21)
Goodwill		5,791,000	7,310,000	15,534,000
Customer relationship & other intangibles		3,441,000	$ 2,440,000	$ 5,466,000
Right-of-use asset obtained in exchange for lease obligation		$ 7,012,000

[1] Includes mortgage loans originated with the intent to sell which are carried at fair value. In addition, this includes the guaranteed portion of SBA loans which are carried at the lower of cost or fair value.