Investments and Fair Value Measurements (Tables)

3 Months Ended

Jun. 28, 2014

Investments and Fair Value Measurements [Abstract]

Available-for-sale securities

The following is a summary of available-for-sale securities as of June 28, 2014 and March 29, 2014 (in thousands):

	Available-for-Sale Securities
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair   Value
June 28, 2014
U.S. government/agency securities	$	102,064	$	1	$	(1	)	$	102,064
Auction rate securities	2,150		—		—			2,150
Money market funds	38,808		—		—			38,808
	$	143,022	$	1	$	(1	)	$	143,022
March 29, 2014
U.S. government/agency securities	$	133,064	$	1	$	—		$	133,065
Auction rate securities	2,150		—		—			2,150
Money market funds	48,800		—		—			48,800
	$	184,014	$	1	$	—		$	184,015

Amortized cost of available-for-sale investments in debt securities with contractual maturities

The amortized cost of available-for-sale investments in debt securities with contractual maturities is as follows (in thousands):

	June 28, 2014				March 29, 2014
	Cost		Estimated Fair Value		Cost		Estimated Fair Value
Due in less than one year	$	140,872	$	140,872	$	181,864	$	181,865
Due after ten years	2,150		2,150		2,150		2,150
Total investments in debt securities	$	143,022	$	143,022	$	184,014	$	184,015

Fair value of the financial assets measured at fair value on a recurring basis

The fair value of the financial assets measured at fair value on a recurring basis was determined using the following levels of inputs as of June 28, 2014 and March 29, 2014 (in thousands):

	Total		Quoted Prices In Active Markets For Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
June 28, 2014
U.S. government/agency securities	$	102,064	$	102,064	$	—
Auction rate securities	2,150		—		2,150
Money market funds	38,808		38,808		—
	$	143,022	$	140,872	$	2,150
March 29, 2014
U.S. government/agency securities	$	133,065	$	133,065	$	—
Auction rate securities	2,150		—		2,150
Money market funds	48,800		48,800		—
	$	184,015	$	181,865	$	2,150