FIXED ASSETS (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 46,564	$ 38,681
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(29,954)	(22,832)
Fixed assets, net	16,610	15,849
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	15,289	16,817
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,485	3,424
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	3,661	3,624
Capitalized Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 24,129	$ 14,816