PROPERTY AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 38,841	$ 42,047
Less: acccumulated depreciation and amortization	31,800	34,119
Property and equipment, net	7,041	7,928
Construction in Progress, Gross	235	513
Impairment of long-lived assets	0	0	$ 662
Capital lease obligation, current	65	62
Capital lease obligation, non-current	140	229
Capital lease obligations incurred	0	0
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,888	5,911
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,244	2,668
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,010	17,946
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 13,699	$ 15,522