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SECURITIES - Available-for-sale Securities With Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Available-for-sale Securities With Unrealized Loss Positions
Available-for-sale securities with unrealized loss positions, less than 12 months, fair value	$ 75,422	$ 26,058
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(877)	(69)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	531	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(12)	0
Available-for-sale securities with unrealized loss positions, fair value	75,953	26,058
Available-for-sale securities, with unrealized loss positions, unrealized losses	(889)	(69)
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	6,994	9,159
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(14)	(2)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, fair value	6,994	9,159
Available-for-sale securities, with unrealized loss positions, unrealized losses	(14)	(2)
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	12,242	4,992
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(257)	(8)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, fair value	12,242	4,992
Available-for-sale securities, with unrealized loss positions, unrealized losses	(257)	(8)
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	11,127	3,811
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(70)	(26)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, fair value	11,127	3,811
Available-for-sale securities, with unrealized loss positions, unrealized losses	(70)	(26)
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	11,957	5,235
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(230)	(24)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	531	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	(12)	0
Available-for-sale securities with unrealized loss positions, fair value	12,488	5,235
Available-for-sale securities, with unrealized loss positions, unrealized losses	(242)	(24)
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	19,905
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(108)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0
Available-for-sale securities with unrealized loss positions, fair value	19,905
Available-for-sale securities, with unrealized loss positions, unrealized losses	(108)
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	5,210	2,861
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(3)	(9)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0	0
Available-for-sale securities with unrealized loss positions, fair value	5,210	2,861
Available-for-sale securities, with unrealized loss positions, unrealized losses	(3)	$ (9)
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	7,987
Available-for-sale securities with unrealized loss positions, less than 12 months, unrealized losses	(195)
Available-for-sale securities with unrealized loss positions, 12 months or more, fair value	0
Available-for-sale securities with unrealized loss positions, 12 months or more, unrealized losses	0
Available-for-sale securities with unrealized loss positions, fair value	7,987
Available-for-sale securities, with unrealized loss positions, unrealized losses	$ (195)

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