Deferred Revenue Deferred revenue consisted of the following (in thousands): | | | | | | | | | | As of December 31, | | 2015 | | 2014 | Subscription | $ | 18,029 |
| | $ | 14,826 |
| Professional services—implementation | 5,254 |
| | 2,974 |
| Professional services—communications | 3,307 |
| | 2,908 |
| Total current | 26,590 |
| | 20,708 |
| Subscription | 1,163 |
| | 1,950 |
| Professional services—implementation | 5,367 |
| | 4,327 |
| Professional services—communications | 992 |
| | 375 |
| Total noncurrent | 7,522 |
| | 6,652 |
| Total | $ | 34,112 |
| | $ | 27,360 |
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