|
Segment Information (Narrative) (Details)
|
12 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
Mar. 31, 2013
|
| Revenue, Major Customer and Geographic Information [Line Items] |
|
|
|
| Entity Wide Revenue By Major Customer Percent Of Revenue Did Not Exceed Ten Percent |
10.00% |
|
|
| Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | GameStop Corp [Member] |
|
|
|
| Revenue, Major Customer and Geographic Information [Line Items] |
|
|
|
| Entity Wide Revenue By Major Customer Percent Of Revenue |
11.00% |
13.00% |
13.00% |
| Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Microsoft [Member] |
|
|
|
| Revenue, Major Customer and Geographic Information [Line Items] |
|
|
|
| Entity Wide Revenue By Major Customer Percent Of Revenue |
10.00% |
|
|
| United States [Member] |
|
|
|
| Revenue, Major Customer and Geographic Information [Line Items] |
|
|
|
| Disclosure on Geographic Areas, Revenue from External Customers Attributed to Entity's Country of Domicile |
99.00% |
|
|
| Switzerland [Member] |
|
|
|
| Revenue, Major Customer and Geographic Information [Line Items] |
|
|
|
| Disclosure on Geographic Areas, Basis for Attributing Revenue to Countries |
1462 |
1171 |
885 |
| Disclosure on Geographic Areas, Revenue from External Customers Attributed to Foreign Countries, Percentage |
32.00% |
33.00% |
23.00% |