Marketable Securities (Tables)

9 Months Ended

Dec. 24, 2016

Marketable Securities [Abstract]

Schedule of Available-for-sale Securities

							Estimated
			Gross		Gross		Fair Value
	Amortized		Unrealized		Unrealized		(Net Carrying
As of December 24, 2016	Cost		Gains		Losses		Amount)
Corporate debt securities	$	36,052	$	-	$	(36)	$	36,016
Commercial paper		36,354		-		(28)		36,326
Total securities	$	72,406	$	-	$	(64)	$	72,342

The Company’s specifically identified gross unrealized losses of $64 thousand related to 18 different securities with total amortized cost of approximately $72.4 million at December 24, 2016.   Four securities had been in a continuous unrealized loss position for more than 12 months as of December 24, 2016.  The gross unrealized loss on these securities was less than one percent of the position value.  Because the Company does not intend to sell the investments at a loss and it is not more likely than not that the Company will be required to sell the investments before recovery of its amortized cost basis, it did not consider the investment in these securities to be other-than-temporarily impaired at December 24, 2016.   

The following table is a summary of available-for-sale securities at March 26, 2016 (in thousands):

								Estimated
				Gross		Gross		Fair Value
		Amortized		Unrealized		Unrealized		(Net Carrying
As of March 26, 2016		Cost		Gains		Losses		Amount)
Corporate debt securities	$		81,310	$	3	$	(100)	$	81,213

Schedule of Cost and Estimated Fair Value of Available-for-sale Securities by Contractual Maturity

	December 24, 2016				March 26, 2016
	Amortized		Estimated		Amortized		Estimated
	Cost		Fair Value		Cost		Fair Value
Within 1 year	$	72,406	$	72,342	$	60,603	$	60,582
After 1 year		-		-		20,707		20,631
Total	$	72,406	$	72,342	$	81,310	$	81,213