Note 9 - Income Taxes (Detail) (USD $)	9 Months Ended		12 Months Ended
	Dec. 23, 2012	Dec. 25, 2011	Mar. 31, 2013
Effective Income Tax Rate, Continuing Operations	39.40%	38.70%
Effective Income Tax Rate Reconciliation, Tax Exempt Income	1.20%	2.00%
Unrecognized Tax Benefits that Would Impact Effective Tax Rate (in Dollars)	$ 327,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued (in Dollars)	365,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit (in Dollars)			(35,000)
Estimated Annual Tax Rate Lower End of Range			38.50%
Estimated Annual Tax Rate Upper End of Range			40.00%
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority (in Dollars)	$ 13,000