PROPERTY AND EQUIPMENT, NET Property and Equipment, Net (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 41,705		$ 60,754
Less: acccumulated depreciation and amortization	33,898		50,914
Property and equipment, net	7,807		9,840
Capital expenditure not yet placed in service	992		1,006
Capital lease obligation, current	59		77
Capital lease obligation, non-current	240		348
Capital expenditures for landlord funded tenant improvements	0	$ 2,137
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	5,982		8,806
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	3,116		5,352
Capitalized software costs
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,437		25,228
Leasehold and building improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	15,170		$ 21,368
Australia
Property, Plant and Equipment [Line Items]
Capital Lease Obligations Incurred	$ 0	$ 557