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SECURITIES - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	$ 28,054,000	$ 22,261,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(262,000)	(133,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	371,581,000	371,320,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(52,010,000)	(49,431,000)
Available-for-sale securities with unrealized loss positions, fair value	399,635,000	393,581,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(52,272,000)	(49,564,000)
Obligations of the U.S. Treasury
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	0	0
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	10,231,000	11,290,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(1,093,000)	(1,035,000)
Available-for-sale securities with unrealized loss positions, fair value	10,231,000	11,290,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(1,093,000)	(1,035,000)
Obligations of U.S. Government agencies
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	0	1,595,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	0	(9,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	9,376,000	8,351,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(1,261,000)	(1,164,000)
Available-for-sale securities with unrealized loss positions, fair value	9,376,000	9,946,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(1,261,000)	(1,173,000)
Bank holding company debt securities
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	0	0
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	23,469,000	23,500,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(5,484,000)	(5,452,000)
Available-for-sale securities with unrealized loss positions, fair value	23,469,000	23,500,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(5,484,000)	(5,452,000)
Obligations Of States And Political Subdivisions Tax Exempt
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	2,475,000	3,257,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(32,000)	(24,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	96,244,000	96,758,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(10,604,000)	(9,552,000)
Available-for-sale securities with unrealized loss positions, fair value	98,719,000	100,015,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(10,636,000)	(9,576,000)
Obligations Of States And Political Subdivisions Taxable
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	0	0
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	48,750,000	49,961,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(8,705,000)	(8,609,000)
Available-for-sale securities with unrealized loss positions, fair value	48,750,000	49,961,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(8,705,000)	(8,609,000)
Residential Passthrough Securities
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	6,684,000	3,334,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(31,000)	(27,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	83,585,000	84,297,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(10,905,000)	(10,157,000)
Available-for-sale securities with unrealized loss positions, fair value	90,269,000	87,631,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(10,936,000)	(10,184,000)
Residential Collateralized Mortgage Obligations
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	13,255,000	3,588,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(141,000)	(2,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	31,246,000	32,808,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(3,835,000)	(3,748,000)
Available-for-sale securities with unrealized loss positions, fair value	44,501,000	36,396,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(3,976,000)	(3,750,000)
Commercial Mortgage Backed Securities
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	2,304,000	2,327,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(41,000)	(16,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	63,817,000	64,355,000
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(10,087,000)	(9,714,000)
Available-for-sale securities with unrealized loss positions, fair value	66,121,000	66,682,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	(10,128,000)	(9,730,000)
Private label commercial mortgage-backed securities
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	3,336,000	8,160,000
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(17,000)	(55,000)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	4,863,000	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(36,000)	0
Available-for-sale securities with unrealized loss positions, fair value	8,199,000	8,160,000
Available-for-sale securities, with unrealized loss positions, unrealized losses	$ (53,000)	$ (55,000)

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