INCOME TAXES (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating Loss Carryforwards [Line Items]
Tax Cuts and Jobs Act, provisional income tax expense	$ 1,200,000
Accrued interest related to the uncertain tax positions	100,000	$ 100,000
Accrued penalties related to uncertain tax positions	0	0
Non-current deferred income tax assets	3,100,000	3,000,000
Decrease in valuation allowance	(17,000,000)	1,300,000
Decrease in valuation allowance due to operational results	(16,300,000)	400,000
Income Taxes Paid	1,300,000	1,700,000	$ 1,500,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	22,400,000
U.S. [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	26,200,000
Foreign Tax Authority Expires 2018 - 2034 [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	9,400,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	53,300,000
Foreign Tax Authority No Expiration [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	43,900,000
New York State tax investment credit [Member]
Operating Loss Carryforwards [Line Items]
Decrease in valuation allowance		$ 900,000
Other Comprehensive Income (Loss) [Member]
Operating Loss Carryforwards [Line Items]
Decrease in valuation allowance	(700,000)
Minimum
Operating Loss Carryforwards [Line Items]
Estimated change in uncertain tax positions	200,000
Maximum
Operating Loss Carryforwards [Line Items]
Estimated change in uncertain tax positions	$ 900,000