ACQUISITION (Details) - USD ($)		12 Months Ended
	Apr. 05, 2017	Dec. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Cash paid at closing		$ 6,845,000	$ 0
Jiffy Air Tool [Member]
Business Acquisition [Line Items]
Cash paid at closing	$ 5,950,000	7,000,000
Less working capital adjustment		(155,000)
Fair value of contingent consideration	$ 1,000,000	692,000
Total estimated purchase price		$ 7,537,000