Income Taxes - Reconciliation of Statutory Federal Income Tax Rate (Details)	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	35.00%	35.00%	34.20%
State income taxes, net of federal benefit	5.50%	5.00%	5.80%
Non-deductible permanent difference	0.50%	2.10%	2.50%
Effect of tax rate change	0.00%	0.00%	(1.00%)
Other	(0.20%)	(0.20%)	(2.00%)
Effective income tax rate	40.80%	41.90%	39.50%