Income Taxes (Reconciliation of tax rates) (Details)	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Statutory federal tax rate	34.00%	34.00%	34.00%
State taxes, net	3.50%	2.80%	3.60%
Federal tax credit	(0.00%)	(0.00%)	0.20%
State tax credit	(0.00%)	(0.00%)	0.10%
Change in valuation reserve	(37.60%)	(29.10%)	(37.00%)
Permanent items	(0.50%)	(7.50%)	(0.10%)
Change in tax contingency reserve	1.00%	(0.10%)	0.00%
Federal Refunds	1.40%	0.00%	0.00%
Other, net	0.30%	(0.30%)	(1.00%)
Effective income tax rate	2.10%	(0.20%)	(0.20%)