SHAREHOLDERS' EQUITY (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Nov. 30, 2019
Stockholders' Equity Note [Abstract]
Net income (loss)	$ (860,000)	$ 2,443,000	$ 4,067,000
Dividends paid	(152,000)	(126,000)	(531,000)
Other comprehensive income, net of tax	(2,485,000)	$ 1,759,000	(4,013,000)
Common stock issued			53,000
Treasury stock acquired	$ 6,000		$ 7,000
Stock repurchase program, authorized amount				$ 1,000,000
Shares of common stock repurchased and placed in treasury (in shares)	438		436