Schedule II - Valuation and Qualifying Accounts (Detail) - Valuation and Qualifying Accounts (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013		Mar. 25, 2012		Mar. 27, 2011
Balance at beginning of period	$ 138		$ 62		$ 415
Additions charged to costs and expenses	15		86		56
Additions charged to other accounts	5	[1]	0		12	[1]
Deductions	28	[2]	10	[2]	421	[2]
Balance at end of period	$ 130		$ 138		$ 62

[1] Uncollectible marketing fund contributions.

[2] Uncollectible amounts written off.