Supplemental Balance Sheet Information (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory
Raw materials	$ 371	$ 859
Finished goods	269	1,515
Total inventory, net	640us-gaap_InventoryNet	2,374us-gaap_InventoryNet
Prepaid expenses and other current assets
Taxes	786us-gaap_PrepaidTaxes	2,693us-gaap_PrepaidTaxes
Software licenses and maintenance	1,538	1,882
Compensation and employee benefits	221	346
Other	1,089us-gaap_OtherPrepaidExpenseCurrent	1,072us-gaap_OtherPrepaidExpenseCurrent
Total prepaid expenses and other current assets	3,634	5,993
Property and equipment
Total fixed assets, net	7,835	10,087
Total capitalized software, net	7,290	5,403
Total property and equipment, net	15,125us-gaap_PropertyPlantAndEquipmentNet	15,490us-gaap_PropertyPlantAndEquipmentNet
Accounts payable and accrued expenses
Accounts payable	2,540us-gaap_AccountsPayableTradeCurrent	4,617us-gaap_AccountsPayableTradeCurrent
Compensation and employee benefits	6,339	3,384
Taxes	528us-gaap_TaxesPayableCurrent	1,664us-gaap_TaxesPayableCurrent
Other accrued expenses	3,056us-gaap_OtherAccruedLiabilitiesCurrent	2,755us-gaap_OtherAccruedLiabilitiesCurrent
Total accounts payable and accrued expenses	12,463	12,420
Leasehold improvements
Property and equipment
Property and equipment, gross	9,722	9,921
Furniture and fixtures
Property and equipment
Property and equipment, gross	654	1,477
Computer and office equipment
Property and equipment
Property and equipment, gross	5,782	7,324
Fixed Assets
Property and equipment
Less: accumulated depreciation and amortization	(8,323)	(8,635)
Capitalized software
Property and equipment
Property and equipment, gross	16,646	13,523
Less: accumulated depreciation and amortization	$ (9,356)	$ (8,120)

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration