Note 6 - Stock-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	12 Months Ended			12 Months Ended					12 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Mar. 26, 2011	Mar. 30, 2013	Mar. 30, 2013 Restricted Stock [Member]	Mar. 31, 2012 Restricted Stock [Member]	Mar. 27, 2010 Restricted Stock [Member]	Mar. 30, 2013 Employee Stock Option [Member]	Mar. 30, 2013 Employee Stock Option [Member] Less Than [Member]	Mar. 30, 2013 Less Than [Member]	Mar. 31, 2012 Less Than [Member]
Note 6 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)				200,000
Percent of Target Level Achieved			75.00%				75.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)	52,000
Estimated Percent of Target Level To Be Achieved					100.00%	125.00%
Restricted Stock or Unit Expense		$ 0.3			$ 0.3
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized					0.4
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								4 years
Share-based Compensation Arrangement By Share-based Payment Award Fair Value Assumptions Expiration Term								10 years
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options									0.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value		0.5								0.1
Proceeds from Stock Options Exercised		0.2								0.1
Warrants Exercised, Aggregate Intrinsic Value		0.1
Proceeds from Warrant Exercises											$ 0.1