Selected Balance Sheet Accounts (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Property and Equipment
Computer software and hardware and capitalized internal use software	$ 14,798	$ 12,990
Furniture and equipment	1,306	1,271
Leasehold improvements	965	957
Property and equipment, gross	17,069	15,218
Less - Accumulated depreciation and amortization	(13,970)	(13,314)
Property and equipment, net	$ 3,099	$ 1,904