Income Taxes (Details 2)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Reconciliation of the statutory federal income tax rate to the effective income tax rate
Statutory U.S. federal income tax rate	35.00%	35.00%	35.00%
Change in U.S. valuation allowance	(37.30%)	(36.60%)	(33.70%)
Taxable foreign source income	(6.00%)	(4.90%)	(30.80%)
State income taxes, net of federal taxes	(0.80%)	(1.00%)	(32.20%)
Other non-deductible expenses	(0.30%)	(0.50%)	(23.10%)
Income tax settlements	0.00%	0.00%	93.50%
Change in foreign operations valuation allowance	3.20%	6.20%	744.00%
Other effect of foreign operations	3.60%	(2.60%)	(837.20%)
Effective income tax rate	(2.60%)	(4.40%)	(84.50%)