Income Taxes-Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Mar. 29, 2015	Mar. 30, 2014	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Statutory federal income tax (percent)	35.00%	35.00%	35.00%
State income taxes, net of federal deduction (percent)	4.70%	3.20%	4.90%
ESOP dividend deduction on allocated shares (percent)	(0.70%)	(0.80%)	(1.00%)
Domestic production deduction (percent)	(2.40%)	(2.10%)	(2.70%)
Impact of amended tax returns (percent)	0.00%	0.00%	(3.30%)
Other — net (percent)	0.30%	0.20%	(0.20%)
Total (percent)	36.90%	35.50%	32.70%