CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net income		$ 48,854,000	$ 74,246,000	$ 56,622,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation		3,688,000	3,475,000	3,190,000
Amortization of premium and accretion of discount on securities, net		578,000	2,665,000	5,817,000
Amortization of restricted stock		10,751,000	8,382,000	7,055,000
Amortization of intangible assets		1,319,000	1,569,000	1,598,000
Amortization of subordinated debt costs		287,000	286,000	1,003,000
Provision for credit losses	[1]	14,091,000	6,353,000	6,475,000
Swap valuation allowance			673,000	2,243,000
Stock-based compensation and employee stock purchase plan expense		178,000	145,000	126,000
Deferred tax (benefit)/expense		(15,276,000)	(6,641,000)	9,452,000
Fair value adjustment for equity security		(181,000)	1,700,000	432,000
Loss on sale of securities, available for sale, net			6,609,000
Proceeds from sales of loans held for sale	[2]	41,355,000	98,568,000	171,342,000
Loans originated for sale	[2]	(30,000,000)	(74,856,000)	(176,759,000)
Gain on loans held for sale	[2]	(2,524,000)	(7,248,000)	(7,133,000)
Gain on loans held for sale at lower of cost or fair value				(1,142,000)
Gain on OREO sold		0	0	(51,000)
Loss/(gain) on disposal of fixed assets		6,000	(275,000)
Gain on life insurance death benefit		(41,000)	(27,000)	(455,000)
Increase in cash surrender value of life insurance, net		(457,000)	(532,000)	(618,000)
(Increase)/decrease in accrued interest receivable		(5,519,000)	(3,568,000)	906,000
(Increase)/decrease in other assets		(3,324,000)	5,261,000	(4,866,000)
Increase in accrued expenses and other liabilities		6,295,000	2,116,000	226,000
Net cash provided by operating activities		70,080,000	118,901,000	75,463,000
Investing activities:
Principal repayments, maturities and calls of securities held to maturity		4,803,000	6,286,000	234,000
Principal repayments, maturities and calls of securities available for sale		633,737,000	440,668,000	453,427,000
Redemptions for FHLB & FRB stock		115,947,000	33,804,000	807,000
Sales of securities available for sale			118,972,000
Purchase of securities held to maturity		(10,347,000)		(108,925,000)
Purchase of securities available for sale		(619,025,000)	(420,169,000)	(653,524,000)
Purchase of FHLB & FRB stock		(116,319,000)	(51,526,000)	(48,000)
Proceeds from sale of loans held for sale at lower of cost or fair value				66,086,000
Net increase in loans, net of participations sold		(153,112,000)	(480,862,000)	(503,747,000)
Sales of OREO		116,000		101,000
Purchases of premises and equipment		(3,275,000)	(3,517,000)	(3,928,000)
Disposal of premises and equipment		(6,000)	277,000
Purchase of wealth management company				(5,500,000)
Proceeds from life insurance death benefit				1,219,000
Net cash used in investing activities		(147,481,000)	(356,067,000)	(753,798,000)
Financing activities:
Net increase/(decrease) in deposits		68,950,000	(60,985,000)	447,665,000
Net increase/(decrease) in short-term borrowings		24,284,000	379,530,000
Repayments of Paycheck Protection Program Liquidity Facility				(177,086,000)
Repayments of FHLB advances				(15,000,000)
Dividends paid on common stock		(3,558,000)	(3,645,000)	(3,775,000)
Exercise of stock options, net of stock swaps		42,000	292,000	187,000
Restricted stock repurchased on vesting to pay taxes		(3,243,000)	(2,937,000)	(2,380,000)
Issuance of restricted stock		0	0	0
Repayments of subordinated debt				(50,000,000)
Issuance of shares for employee stock purchase plan		1,016,000	904,000	833,000
Shares repurchased		(12,494,000)	(32,722,000)	(28,627,000)
Net cash provided by financing activities		74,997,000	280,437,000	171,817,000
Net (decrease)/increase in cash and cash equivalents		(2,404,000)	43,271,000	(506,518,000)
Cash and cash equivalents at beginning of period		190,075,000	146,804,000	653,322,000
Cash and cash equivalents at end of period		187,671,000	190,075,000	146,804,000
Cash paid during the period for:
Interest		141,166,000	33,158,000	22,356,000
Income tax, net		$ 18,474,000	25,002,000	16,079,000
Transfer of loans to loans held for sale				57,376,000
Transfer of loans to other real estate owned			$ 116,000
Acquisitions (Note 21)
Goodwill				3,109,000
Customer relationship & other intangibles				$ 3,500,000

[1] Commencing on January 1, 2022, the allowance calculation is based on the CECL methodology. Prior to January 1, 2022 the calculation was based on the incurred loss methodology.

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