SUMMARY OF ACCOUNTING POLICIES - Customer Concentration (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Schedule Of Summary Of Accounting Policies [Line Items]
Property, Plant and Equipment, Cost Capitalization	1,000
Advertising Expense	$ 1,276,000	$ 1,529,000
Weighted average antidilutive stock options outstanding	137,000	164,000
Selling, general and administrative expenses	$ 19,856,000	$ 19,367,000
Shipping and Handling [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Selling, general and administrative expenses	$ 2,038,000	$ 1,831,000
Maximum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	20 years
Liability period	3 years
Minimum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Finite-Lived Intangible Asset, Useful Life	3 years
Liability period	1 year
Machinery and Equipment [Member] | Maximum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Machinery and Equipment [Member] | Minimum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Building [Member] | Maximum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	31 years
Building [Member] | Minimum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	27 years 6 months
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One customer
Schedule Of Summary Of Accounting Policies [Line Items]
Concentration Risk, Percentage	35.90%	38.00%
Sales Revenue, Segment [Member] | Customer Concentration Risk [Member] | One customer
Schedule Of Summary Of Accounting Policies [Line Items]
Concentration Risk, Percentage	26.10%	26.30%