PROPERTY AND EQUIPMENT, NET Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Construction in Progress, Gross	$ 456	$ 235
Property, plant and equipment, gross	40,450	38,841
Less: acccumulated depreciation and amortization	33,422	31,800
Property and equipment, net	7,028	7,041
Capital lease obligation, current	70	65
Capital lease obligation, non-current	124	140
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	6,061	5,888
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,295	2,244
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,929	17,010
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 14,165	$ 13,699