INCOME TAXES, Tax Credits and Net Operating Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Tax Credit Carryforward [Line Items]
Tax provision computed at the federal statutory rate, percentage	35.00%	35.00%	35.00%
Additional Income Tax Information [Abstract]
Deferred tax assets, net operating loss carryforwards	$ 10,524	$ 12,891
Federal and State Jurisdiction [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	14,400
Tax credit carryforward	1,100
Tax credit carryforward, valuation allowance	(1,000)
Federal and State Jurisdiction [Member] | Capital Loss Carryforward [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards, valuation allowance	(200)
Federal and State Jurisdiction [Member] | Array [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	3,700
Federal and State Jurisdiction [Member] | Connectivity Solutions [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	9,000
Deferred tax assets, net operating loss carryforwards	5,300
Foreign Jurisdictions [Member]
Additional Income Tax Information [Abstract]
Operating loss carryforwards	32,200
Tax credit carryforward	300
Operating loss carryforwards, valuation allowance	(7,300)
Deferred tax assets, net operating loss carryforwards	7,600
Foreign Jurisdictions [Member] | Capital Loss Carryforward [Member]
Additional Income Tax Information [Abstract]
Tax credit carryforward	$ 200
Macao [Member]
Tax Credit Carryforward [Line Items]
Tax provision computed at the federal statutory rate, percentage	12.00%
People's Republic of China (PRC) [Member]
Tax Credit Carryforward [Line Items]
Tax provision computed at the federal statutory rate, percentage	25.00%