BUSINESS AND SUMMARY OF ACCOUNTING POLICIES - Additional information (Details)		3 Months Ended		12 Months Ended
	Apr. 20, 2020 USD ($)	Mar. 31, 2020 USD ($) item $ / product	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Schedule Of Summary Of Accounting Policies [Line Items]
Working capital		$ 21,144,000
Cash flow from operating activities		(316,000)	$ (490,000)
Operating Lease, Right-of-Use Asset		3,673,000		$ 3,859,000
Operating Lease, Liability		3,766,000
Operating Lease, Expense		$ 234,000	$ 81,000
Accounts Receivable [Member] | Home Depot [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Concentration Risk, Percentage		32.70%		27.20%
Sales Revenue, Net [Member] | Home Depot [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Concentration Risk, Percentage		22.40%	17.60%
Florida Pneumatic [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Number Of Types Of Pneumatic Hand Tools Imported Or Manufactured | item		75
Florida Pneumatic [Member] | Minimum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Sale Price Per Product | $ / product		50
Florida Pneumatic [Member] | Maximum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Sale Price Per Product | $ / product		1,000
Hy-Tech [Member] | Minimum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Sale Price Per Product | $ / product		300
Hy-Tech [Member] | Maximum [Member]
Schedule Of Summary Of Accounting Policies [Line Items]
Sale Price Per Product | $ / product		42,000
Subsequent events | Payroll Protection Program
Schedule Of Summary Of Accounting Policies [Line Items]
Loan received	$ 2,900,000