Selected Balance Sheet Accounts (Details 4) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Accrued expenses and other current liabilities
Compensation and related costs and professional fees	$ 1,793	$ 3,981
Other accrued expenses	4,937	5,715
Amounts due to customers	575	486
Other current liabilities	470	562
Total accrued expenses and other current liabilities	$ 7,775	$ 10,744