DEBT (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Apr. 30, 2017
Debt Instrument [Line Items]
Short-term Debt	$ 6,931,000		$ 5,648,000
Repayments of Long-term Debt	0	$ 20,000
Line of Credit Facility, Average Outstanding Amount	6,281,000	$ 4,076,000
Short-term Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity	$ 8,189,000		$ 9,200,000
Short-term Debt [Member] | Base Rate borrowing [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.50%		0.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 16,000,000
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases				2,000,000
Capex Borrowing [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity				$ 1,600,000