SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2017
Equity method investment	$ 1,868,000	$ 2,521,000
Accounts receivable, net	31,033,000	35,204,000
Cash and cash equivalents deposited with financial institutions	963,000	2,950,000	$ 9,184,000
Net Income Loss, Increase (Decrease)	$ 7,781,220
Earnings Per Share, Basic, Increase (Decrease)	$ 0.30
Earnings Per Share, Diluted, Changes	$ 0.30
Restricted Cash
Restricted cash	$ 468,000	$ 468,000
LLC [Member]
Equity method investment, ownership percentage				25.00%
Minimum
Vesting period	1 year
Maximum
Product warranty term	2 years
Vesting period	3 years
U.S.
Percentage of revenue	97.70%	88.10%
Cash and cash equivalents deposited with financial institutions	$ 300,000
Canada
Percentage of revenue	2.30%	11.90%
Cash and cash equivalents deposited with financial institutions	$ 200,000
Collateral for Letter of Credit and Credit Card Obligations
Restricted Cash
Restricted cash	500,000	$ 500,000
Other Noncurrent Assets
Equity method investment	1,900,000	2,500,000
Equity Method Investee
Accounts receivable, net	4,800,000	4,600,000
Net income	$ 200,000	700,000
Dividends received		$ 800,000