REVENUE FROM CONTRACTS FROM CUSTOMERS Financial Statement Impact of 606 - Statement of Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 125,742	$ 68,256
Cost of revenue, excluding amortization	93,774	47,889
Operating Income (Loss)	1,003	(1,267)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(3,820)	(3,884)
Income tax benefit, net	(693)	0
Net loss	$ (3,127)	$ (3,884)
Basic (in dollars per share)	$ (0.06)	$ (0.08)
Diluted (in dollars per share)	$ (0.06)	$ (0.08)
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Revenue	$ 124,432
Cost of revenue, excluding amortization	93,542
Operating Income (Loss)	(75)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(4,898)
Income tax benefit, net	(889)
Net loss	$ (4,009)
Basic (in dollars per share)	$ (0.08)
Diluted (in dollars per share)	$ (0.08)