Debt (Details) (USD $)					6 Months Ended			0 Months Ended	6 Months Ended		1 Months Ended	6 Months Ended
	Sep. 28, 2012	Aug. 31, 2012	Mar. 30, 2012	Feb. 24, 2012	Sep. 28, 2012 Revolving Line of Credit [Member]	Mar. 30, 2012 Revolving Line of Credit [Member]	Sep. 28, 2012 Revolving Line of Credit [Member] Operation Or Asset Disposal [Member]	Feb. 24, 2012 2012 Notes [Member]	Sep. 28, 2012 2012 Notes [Member]	Mar. 30, 2012 2012 Notes [Member]	Aug. 31, 2012 2008 Notes [Member]	Sep. 28, 2012 2008 Notes [Member]		Mar. 30, 2012 2008 Notes [Member]
Debt Instrument [Line Items]
Debt, long-term and short-term, combined amount, total	$ 459,845,000		$ 454,916,000						$ 250,000,000	$ 250,000,000		$ 209,845,000		$ 204,916,000
Less: Current portion of long-term debt	0		0
Long-term debt	459,845,000		454,916,000
Debt Instruments [Abstract]
Debt instrument, description								On February 24, 2012, the Company issued $250.0 million aggregate principal 6.375% senior notes, which mature on March 1, 2022 (the “2012 Notes”). Interest on the notes is payable semi-annually in arrears on March 1 and September 1, beginning September 1, 2012. The 2012 Notes are fully and unconditionally guaranteed on a joint and several basis by certain of the Company’s domestic subsidiaries (the “Guarantor Subsidiaries”). Refer to Footnote 14, Condensed Consolidating Financial Information, for further information regarding the Guarantor Subsidiaries.			In August 2008, the Company issued $230.0 million principal amount 3.125% senior convertible notes, which mature on August 1, 2014 (the “2008 Notes”). Interest on the notes is payable semi-annually in arrears on February 1 and August 1 of each year. The notes will be convertible into cash up to the principal amount of the notes and shares of the Company’s common stock for any conversion value in excess of the principal amount under certain circumstances. The ability of note holders to convert is assessed on a quarterly basis and is dependent on the trading price of the Company’s stock during the last 30 trading days of each quarter (“Contingent Conversion Trigger”).
Stated interest rate								6.375%				3.125%
Payment terms, interest									Interest on the notes is payable semi-annually in arrears on March 1 and September 1, beginning September 1, 2012.			Interest on the notes is payable semi-annually in arrears on February 1 and August 1 of each year.
Frequency of periodic payment, interest									semi-annually			semi-annually
Date of first required payment, interestst									Sep. 01, 2012
Terms of conversion feature												The notes will be convertible into cash up to the principal amount of the notes and shares of the Company’s common stock for any conversion value in excess of the principal amount under certain circumstances. The ability of note holders to convert is assessed on a quarterly basis and is dependent on the trading price of the Company’s stock during the last 30 trading days of each quarter (“Contingent Conversion Trigger”).
Principal balance		230,000,000		250,000,000					250,000,000			230,000,000		230,000,000
Unamortized discount												(20,155,000)		(25,084,000)
Net carrying amount												209,845,000		204,916,000
Equity component, carrying amount pretax												55,636,000	[1]	55,636,000	[1]
Deferred tax liability related to the issuance of convertible debt												20,523,000
Fair value of unsecured notes									265,950,000	257,500,000
Fair value of convertible debt												284,050,000		302,174,000
Line of Credit Facility [Abstract]
Revlolving line of credit, description					The Company maintains an asset-based revolving line of credit (the “RLOC”) under a credit agreement (the “Credit Agreement”) with the following features and key terms: (i) a five-year term, maturing on November 16, 2016; (ii) a facility size of $300.0 million, with increased borrowing capacity of up to $100.0 million via an accordion feature; and (iii) conditional covenants based on the Company’s borrowing availability and fixed charge coverage ratio requirements. Availability depends on a borrowing base calculation consisting of accounts receivable and inventory, subject to satisfaction of certain eligibility requirements, and certain other reserves. Borrowings under the RLOC bear interest at the bank’s base rate or at LIBOR plus applicable margins. Additionally, the RLOC incurs fees at a fixed rate of 0.25% for any unused portion of the facility.
Term, period					five-year term
Maturity date					Nov. 16, 2016
Maximum borrowing capacity					300,000,000
Additional borrowing capacity available via accordian feature					100,000,000
Fixed interest rate on unused portion of the facility					0.25%
Covenant terms					Under the RLOC, the Company and certain of its subsidiaries are subject to certain covenants, including but not limited to, limitations on: (i) selling or transferring assets, (ii) making certain permitted investments, and (iii) incurring additional indebtedness and liens. However, these covenants may not apply if the Company maintains sufficient Availability under the credit facility and satisfies fixed charge coverage ratios.
Outstanding borrowings					0	0
Remaining borrowing capacity					$ 272,700,000		$ 201,800,000
Average daily interest rate, excluding debt issuance costs and unused line fees					0.00%

[1] The Company recognized a deferred tax liability of $20,523 related to the issuance of the 2008 Notes.