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Note 6 - Accounts and Other Receivables, Net (Detail) - Changes in allowance for doubtful accounts (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Dec. 23, 2012
Dec. 25, 2011
Mar. 25, 2012
Beginning balance $ 138 $ 62 $ 62
Bad debt expense 25 0 86
Accounts written off (28)   (10)
Ending balance $ 135   $ 138