Stockholders' Equity - Restricted Stock Unit Activity (Details) (Restricted Stock [Member]) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Restricted Stock [Member]
Schedule of Restricted Stock Unit Activity
Outstanding at the beginning of the year	9,244	3,074	3,687
Awarded during the year	1,040	8,833	1,584
Vested during the year	(2,345)	(1,701)	(1,557)
Cancelled during the year	(1,495)	(962)	(640)
Outstanding at the end of the year	6,444	9,244	3,074