Segment Information (Narrative) (Details)	3 Months Ended		9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010
GameStop Corp [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue by major customer	14.00%	14.00%	15.00%	15.00%
Wal-Mart Stores Inc [Member]
Revenue, Major Customer [Line Items]
Percent of net revenue by major customer		10.00%		10.00%
Net revenue did not exceed ten percent	10.00%		10.00%