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Amount of investment in marketable security.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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NOTES PAYABLE AND LONG-TERM DEBT (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Feb. 26, 2020	May 26, 2010
Debt Instrument [Line Items]
Cash flow hedge, derivative instrument liabilities at fair value	$ 799,000		$ 799,000		$ 65,000
Unrealized gain (loss) on interest rate swap	39,000	$ 47,000	(580,000)	$ 92,000	134,000
Securities on deposit	1,197,000		1,197,000		294,000
Collateral Pledged [Member]
Debt Instrument [Line Items]
Available-for-sale securities pledged as collateral	1,197,000		1,197,000		$ 294,000
Interest rate swap
Debt Instrument [Line Items]
Derivative, notional amount						$ 3,000,000	$ 9,000,000
Derivative, fixed interest rate						4.93%	8.49%
Cash flow hedge, liability at fair value	200,000		200,000
Interest rate swap
Debt Instrument [Line Items]
Derivative, notional amount						$ 9,000,000
Derivative, fixed interest rate						5.28%
Cash flow hedge, liability at fair value	$ 599,000		$ 599,000