DIVESTITURES (Details) - USD ($)			12 Months Ended
	Jun. 15, 2015	May. 07, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other non-operating income (loss), including interest			$ 8,000	$ 42,000	$ 46,000
Proceeds from Divestiture of Businesses			19,837,000	0	0
Hudson Information Technology (US) Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses	$ 16,977,000
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax			(130,000)	2,167,000	1,195,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal			15,918,000
Disposal Group, Not Discontinued Operation, Tax Expense (Benefit)			11,000
Netherlands Business Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses		$ 9,029,000
Proceeds From Divestiture of Business, Cash Retained			1,135,000
Gain (Loss) on Disposition of Business			2,841,000
Disposal Group, Not Discontinued Operation, Tax Expense (Benefit)			0
Netherlands subsidiary
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (Loss) from Individually Significant Component Disposed of or Held-for-sale, Excluding Discontinued Operations, before Income Tax			373,000	$ 1,799,000	$ 2,382,000
Foreign Currency Gain (Loss) [Member] | Netherlands Business Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax			(2,799,000)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax			(450,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Exit of Business in Central and Eastern Europe [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax			1,208,000
Reclassification out of Accumulated Other Comprehensive Income [Member] | Exit of Business in Luxembourg [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, before Tax			$ (132,000)