Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Prepaid expenses and other current assets
Taxes	$ 1,971	$ 786
Software licenses and maintenance	1,521	1,538
Compensation and employee benefits	324	221
Inventory - raw materials	0	371
Inventory - finished goods	0	269
Other	1,525	1,511
Total prepaid expenses and other current assets	5,341	4,696
Property and equipment
Total fixed assets, net	6,215	7,835
Total capitalized software, net	7,036	7,290
Total property and equipment, net	13,251	15,125
Accounts payable and accrued expenses
Accounts payable	3,018	2,540
Compensation and employee benefits	5,826	6,339
Taxes	140	528
Other accrued expenses	3,179	3,056
Total accounts payable and accrued expenses	12,163	12,463
Leasehold improvements
Property and equipment
Property and equipment, gross	9,538	9,722
Furniture and fixtures
Property and equipment
Property and equipment, gross	597	654
Computer and office equipment
Property and equipment
Property and equipment, gross	4,888	5,782
Fixed Assets
Property and equipment
Less: accumulated depreciation	(8,808)	(8,323)
Capitalized software
Property and equipment
Property and equipment, gross	18,909	16,646
Less: accumulated depreciation	(11,873)	$ (9,356)
Separation Charges
Property, Plant and Equipment [Line Items]
Payments for Restructuring	0
Accounts payable and accrued expenses
Restructuring charges	$ 400