Goodwill and Intangible Assets - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization of intangible assets | $ 3,100 | $ 3,441 | $ 9,246 | $ 15,377 |
| Service Costs | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization of intangible assets | 2,424 | 1,969 | 5,910 | 10,683 |
| Accelerated amortization of intangible assets | 1,200 | 100 | 1,700 | 3,300 |
| Sales and Marketing | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization of intangible assets | 281 | 949 | 2,178 | 2,914 |
| Product Development | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization of intangible assets | 247 | 246 | 740 | 1,193 |
| General and Administrative | ||||
| Finite Lived Intangible Assets [Line Items] | ||||
| Amortization of intangible assets | $ 148 | $ 277 | $ 418 | $ 587 |