Income Taxes (Reconciliation of tax rates) (Details)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Statutory federal tax rate	34.00%	34.00%	34.00%
State taxes, net	2.80%	3.60%	2.80%
Federal tax credit	(0.00%)	0.20%	0.90%
State tax credit	(0.00%)	0.10%	0.40%
Change in valuation reserve	(29.10%)	(37.00%)	(10.20%)
Permanent items	(7.50%)	(0.10%)	(2.90%)
Change in tax contingency reserve	(0.10%)	0.00%	(0.30%)
Other, net	(0.30%)	(1.00%)	0.20%
Effective income tax rate	(0.20%)	(0.20%)	24.90%