Long-term Debt and Bank Credit Facilities (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Oct. 06, 2012	Dec. 15, 2012	Dec. 21, 2011
Line of Credit Facility, Maximum Borrowing Capacity			$ 520.0
Senior Subordinated Convertible Debt Reserve	100.0	150.0
Line of Credit Facility, Interest Rate Description	The LIBOR interest rate margin was 1.75% as of October 6, 2012, and can vary quarterly in 0.25% increments between three pricing levels ranging from 1.50% to 2.00% based on the excess availability, which is defined in the credit agreement as (a) the lesser of (i) the borrowing base; or (ii) the aggregate commitments; minus (b) the aggregate of the outstanding credit extensions
Debt Instrument, Interest Rate, Stated Percentage	1.75%
Debt Instrument, Interest Rate Increase	0.0025
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum	1.50%
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum	2.00%
Letters of Credit Outstanding, Amount	13.6
Line of Credit Facility, Expiration Date	Dec. 21, 2016
Line of Credit Facility, Covenant Terms	The Credit Agreement contains no financial covenants unless (i) an event of default occurs under the Credit Agreement, or (ii) the failure of the Company to maintain excess availability equal to or greater than 10% of the borrowing base at any time, in which event, the Company must comply with a trailing 12-month basis consolidated fixed charge covenant ratio of 1.0 : 1.0, which ratio shall continue to be tested each period thereafter until excess availability exceeds 10% of the borrowing base for three consecutive fiscal periods
Debt Instrument, Debt Default, Amount	15.0
Term Loan Facility Maximum Borrowing Capacity	16.9
Maximum [Member]
Line of Credit Facility, Increase, Additional Borrowings	250.0
Swing Linesubfacility [Member]
Line of Credit Facility, Maximum Borrowing Capacity			50.0
Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity			75.0
Senior Subordinated Convertible Debt [Member]
Debt Instrument, Face Amount	150.1
Debt Instrument, Maturity Amount	$ 322.0