SHAREHOLDERS' EQUITY (Narrative) (Details) - USD ($)		3 Months Ended		12 Months Ended
	May 21, 2021	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jun. 01, 2020
Stockholders' Equity Note [Abstract]
Net income		$ 963,000	$ 722,000	$ (582,000)
Dividends paid		(152,000)	(152,000)	(608,000)
Other comprehensive income, net of tax		$ (4,274,000)	$ (1,146,000)	1,564,000
Common stock issued				$ 26,000
Maximum
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Stock repurchase program, authorized amount					$ 500,000
Directors
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Stock issued for compensation (in shares)	2,262