Summary of Significant Accounting Policies (Property and Equipment) (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
|
| Minimum | ||
| Property, Plant and Equipment [Line Items] | ||
| Estimated useful life | 3 years | |
| Maximum | ||
| Property, Plant and Equipment [Line Items] | ||
| Estimated useful life | 10 years | |
| Leasehold Improvements | Minimum | ||
| Property, Plant and Equipment [Line Items] | ||
| Estimated useful life | 1 year | |
| Leasehold Improvements | Maximum | ||
| Property, Plant and Equipment [Line Items] | ||
| Estimated useful life | 5 years | |
| Software | ||
| Property, Plant and Equipment [Line Items] | ||
| Estimated useful life | 3 years | |
| Capitalized costs, net | $ 5.8 | $ 14.3 |