Convertible Debentures and Revolving Credit Facility (Tables)

6 Months Ended

Oct. 01, 2011

2.625% Senior Convertible Debentures [Member]

Debt Instrument [Line Items]

Carrying values of liability and equity components of debentures

	October 1,			April 2,
(In thousands)	2011			2011
Liability component:
Principal amount of the 2.625% Debentures	$	600,000		$	600,000
Unamortized discount of liability component		(88,083	)		(95,855	)
Hedge accounting adjustment — sale of interest rate swap		25,454			27,700
Net carrying value of the 2.625% Debentures	$	537,371		$	531,845
Equity component — net carrying value	$	105,620		$	105,620

Interest expense related to debentures

	Three Months Ended				Six Months Ended
	October 1,		October 2,		October 1,		October 2,
(In thousands)	2011		2010		2011		2010
Contractual coupon interest	$	3,938	$	3,938	$	7,875	$	4,988
Amortization of debt issuance costs		362		365		724		482
Amortization of debt discount		2,763		3,167		5,526		4,213
Total interest expense related to the 2.625% Debentures	$	7,063	$	7,470	$	14,125	$	9,683

3.125% Debentures [Member]

Debt Instrument [Line Items]

Carrying values of liability and equity components of debentures

	October 1,			April 2,
(In thousands)	2011			2011
Liability component:
Principal amount of the 3.125% Debentures	$	689,635		$	689,635
Unamortized discount of liability component		(327,735	)		(329,941	)
Unamortized discount of embedded derivative from date of issuance		(1,475	)		(1,504	)
Carrying value of liability component — 3.125% Debentures		360,425			358,190
Carrying value of embedded derivative component		2,007			945
Net carrying value of the 3.125% Debentures	$	362,432		$	359,135
Equity component — net carrying value	$	229,513		$	229,513

Interest expense related to debentures

	Three Months Ended				Six Months Ended
	October 1,		October 2,		October 1,		October 2,
(In thousands)	2011		2010		2011		2010
Contractual coupon interest	$	5,388	$	5,388	$	10,766	$	10,776
Amortization of debt issuance costs		55		55		112		112
Amortization of embedded derivative		14		14		29		29
Amortization of debt discount		1,113		1,036		2,206		2,053
Total interest expense related to the 3.125% Debentures	$	6,570	$	6,493	$	13,113	$	12,970