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CREDIT FACILITY AND ACQUISITION DEBT (Long-term Debt Table) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Accumulated Amortization, Debt Issuance Costs	$ 937,000			$ 819,000
Current maturities on long-term debt	(913,000)			(1,027,000)
Long-term debt, excluding current maturities	4,442,000			4,482,000
Revolving credit facility present accordion provisions	75,000,000.0
Credit Facility amortization of debt issuance costs	193,000		$ 200,000
Credit Agreement 2018 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Carrying value of the liability component				47,200,000
Credit Facility amortization of debt issuance costs		$ 118,000	$ 126,000
Credit Agreement [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt issuance costs				(1,136,000)
Credit Agreement [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Carrying value of the liability component	27,282,000			46,064,000
Notes Payable, Other Payables [Member] | Acquisition Debt, Deferred Purchase Price [Member]
Debt Instrument [Line Items]
Carrying value of the liability component	5,355,000			$ 5,509,000
Revolving Credit Facility [Member] | Credit Agreement [Member]
Debt Instrument [Line Items]
Debt issuance costs	$ (1,018,000)

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Additional borrowing capacity under the credit facility's accordion feature providing the right to increase the line of credit borrowing capacity.

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