Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Deferred rent | $ 1.0 | $ 0.3 | |
| Outstanding letters of credit | 0.6 | ||
| Rent expense | 2.1 | $ 1.6 | $ 0.8 |
| Total contractual commitments | 6.7 | ||
| Commitments due within next year | 5.6 | ||
| Commitments due within one to two years | 1.0 | ||
| Commitments due within two to three years | $ 0.1 | ||