OTHER REAL ESTATE OWNED ("OREO") (Foreclosed Real Estate Roll Forward) (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Repossessed Assets Rollforward [Roll Forward]
Balance at beginning of year	$ 3,109	$ 7,773	$ 7,773
Additions of underlying property	0	1,240	1,240
Disposals of underlying property	(932)	(2,838)	(2,882)
Valuation allowance	(641)	(2,177)	(3,022)
Balance at end of period	$ 1,536	$ 3,998	$ 3,109