GOODWILL AND OTHER INTANGIBLE ASSETS (Details 1) - USD ($)			12 Months Ended
		Apr. 05, 2017	Dec. 31, 2017	Dec. 31, 2016
Other intangible assets:
Cost			$ 11,339,000	$ 8,597,000
Accumulated amortization			2,806,000	1,991,000
Net book value			8,533,000	6,606,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		15 years
Customer relationships [Member]
Other intangible assets:
Cost	[1]		6,836,000	5,143,000
Accumulated amortization	[1]		1,570,000	1,022,000
Net book value	[1]		$ 5,266,000	$ 4,121,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			10 years 1 month 6 days	9 years 3 months 18 days
Trademarks and trade names one [Member]
Other intangible assets:
Cost	[1]		$ 2,329,000	$ 1,507,000
Accumulated amortization	[1]		0	0
Net book value	[1]		$ 2,329,000	$ 1,507,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	[2]		13 years 6 months	14 years 6 months
Trademarks and trade names two [Member]
Other intangible assets:
Cost	[2]		$ 200,000	$ 200,000
Accumulated amortization	[2]		19,000	5,000
Net book value	[2]		181,000	195,000
Engineering drawings [Member]
Other intangible assets:
Cost			330,000	330,000
Accumulated amortization			175,000	148,000
Net book value			$ 155,000	$ 182,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years 1 month 6 days	8 years 9 months 18 days
Non-compete agreements [Member]
Other intangible assets:
Cost	[1]		$ 239,000	$ 212,000
Accumulated amortization	[1]		210,000	150,000
Net book value	[1]		$ 29,000	$ 62,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			1 year 9 months 18 days	1 year 2 months 12 days
Patents [Member]
Other intangible assets:
Cost	[3]		$ 1,405,000	$ 1,205,000
Accumulated amortization	[3]		832,000	666,000
Net book value	[3]		$ 573,000	$ 539,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			8 years 9 months 18 days	6 years 1 month 6 days

[1] A portion of these intangibles are maintained in a foreign currency, and are therefore subject to foreign exchange rate fluctuations.

[2] These were previously considered an indefinite-lived intangible asset of Hy-Tech. However, as the result of a prior impairment, the Company began amortizing these intangible assets over a 15 year useful life.

[3] The $200,000 increase represents a patent acquired during the third quarter of 2017.