Property and Equipment, net - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | $ 101,001 | $ 50,655 |
| Less: Accumulated depreciation | (29,611) | (19,924) |
| Total property and equipment, net | 71,390 | 30,731 |
| Computer equipment, software, and internally developed software | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 53,862 | 37,110 |
| Furniture and fixtures | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 3,575 | 2,335 |
| Leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 4,410 | 4,611 |
| Capitalized facility leases | ||
| Property, Plant and Equipment [Line Items] | ||
| Property and equipment, gross | 39,154 | $ 6,599 |
| Less: Accumulated depreciation | $ (200) |