Note 4 - Marketable Securities (Tables)

6 Months Ended

Sep. 29, 2013

Table Text Block [Abstract]

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

	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
September 29, 2013	$	10,694	$	361	$	-	$	11,055
March 31, 2013	$	11,768	$	539	$	1	$	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
September 29, 2013	$	11,055	$	4,459	$	5,394	$	1,202	$	-