INCOME TAXES (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Tax open years subject to examination [Line Items]
Tax Cuts And Jobs Act Of 2017 Incomplete Accounting Provisional Federal And State Income Tax Expense Benefit					$ 0
Income tax benefit (provision)			$ 281,000	$ 392,000
Pre-tax income (loss)	$ (1,244,000)	$ (488,000)	$ (3,969,000)	$ (821,000)
Effective income tax rate			(7.10%)	(47.70%)
U.S. Federal statutory rate			21.00%	35.00%
Unrecognized tax benefits	1,978,000		$ 1,978,000		1,682,000
Accrued interest and penalties	577,000		577,000		$ 566,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense			$ 28,000	$ 28,000
U.S. Federal [Member]
Tax open years subject to examination [Line Items]
Open Tax Year			2014
Other U.S. state and local juristictions [Member]
Tax open years subject to examination [Line Items]
Open Tax Year			2013
Australia
Tax open years subject to examination [Line Items]
Open Tax Year			2017
BELGIUM
Tax open years subject to examination [Line Items]
Open Tax Year			2015
CANADA
Tax open years subject to examination [Line Items]
Open Tax Year			2013
NETHERLANDS
Tax open years subject to examination [Line Items]
Open Tax Year			2012
SWITZERLAND
Tax open years subject to examination [Line Items]
Open Tax Year			2013
United Kingdon
Tax open years subject to examination [Line Items]
Open Tax Year			2017
Justifications in Asia [Member]
Tax open years subject to examination [Line Items]
Open Tax Year			2018
Minimum
Tax open years subject to examination [Line Items]
Possible decrease of unrecognized tax benefits	0		$ 0
Maximum
Tax open years subject to examination [Line Items]
Possible decrease of unrecognized tax benefits	$ 180,000		$ 180,000