Note 4 - Marketable Securities (Tables)

9 Months Ended

Dec. 29, 2013

Marketable Securities Disclosure [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
December 29, 2013	$	10,990	$	307	$	-	$	11,297
March 31, 2013	$	11,768	$	539	$	-	$	12,307

Investments Classified by Contractual Maturity Date [Table Text Block]

Fair value of Municipal Bonds	Total		Less than 1 Year		1 – 5 Years		5 – 10 Years		After 10 Years
December 29, 2013	$	11,297	$	4,760	$	5,343	$	1,194	$	-