Income Taxes (Major Differences Between the Federal Statutory Rate and the Effective Tax Rate) (Details)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
Dividend income	0.00%	(0.20%)	0.40%
Withholding tax	(2.20%)	0.00%	0.00%
Change in tax rate	0.20%	(6.70%)	(4.20%)
Change in uncertain tax positions	2.40%	(312.10%)	(15.20%)
Local tax provision	(1.40%)	527.00%	9.30%
Change in valuation allowances	(123.30%)	(8109.80%)	(2.10%)
Revaluation of warrants	0.00%	(3.20%)	(0.40%)
Rate differences on foreign subsidiaries	10.50%	(1795.20%)	(59.10%)
Executive compensation	0.00%	72.20%	2.80%
Thin cap disallowance	(0.70%)	84.10%	0.00%
Spain tax settlement	0.00%	1787.00%	0.00%
Sub part F income	0.00%	28.00%	1.00%
Other, net	(1.60%)	343.30%	0.50%
Effective tax rate	(81.10%)	(7350.60%)	(32.00%)