Property and Equipment - Schedule of Depreciation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Property Plant And Equipment [Line Items]
Depreciation	$ 2,699	$ 2,839
Service Costs
Property Plant And Equipment [Line Items]
Depreciation	1,464	1,497
Sales and Marketing
Property Plant And Equipment [Line Items]
Depreciation	13	20
Product Development
Property Plant And Equipment [Line Items]
Depreciation	41	57
General and Administrative
Property Plant And Equipment [Line Items]
Depreciation	$ 1,181	$ 1,265