SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Accounting Policies [Abstract]

The components of accumulated other comprehensive loss

The components of accumulated other comprehensive loss, net of tax, are as follows:

					Accumulated Other Comprehensive Loss
					Other
	Foreign Currency		Unrealized gain		Comprehensive
	Translation		(loss) on securities		Loss
December 31, 2020	$	(700,000)	$	21,000	$	(679,000)
Net current period change		700,000		(6,000)		694,000
September 30, 2021	$	—	$	15,000	$	15,000

The components of accumulated other comprehensive loss are as follows:

	Foreign Currency Translation			Unrealized (loss)/gain on securities			Accumulated Other Comprehensive Loss
December 31, 2018	$	(764,000	)	$	13,000		$	(751,000	)
Net current period change		55,000			(2,000	)		53,000
December 31, 2019	$	(709,000	)	$	11,000		$	(698,000	)
Net current period change		9,000			10,000			19,000
December 31, 2020	$	(700,000	)	$	21,000		$	(679,000	)

Schedule of warranty

	Year Ended December 31
	2020			2019
Beginning balance	$	513,000		$	554,000
Amounts charged to expense		59,000			10,000
Actual warranty costs paid		(67,000	)		(51,000	)
Ending balance	$	505,000		$	513,000