Long-Term Debt - Additional information (Detail) (USD $) In Millions, unless otherwise specified							12 Months Ended				1 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Maximum	Jun. 28, 2011 LIBOR	Jun. 28, 2011 Alternate Base Rate	Jun. 28, 2011 Alternate Base Rate Federal Funds Rate	Dec. 31, 2012 Voluntary Principal Pre-Payments	Dec. 31, 2012 Senior Unsecured Notes	Dec. 31, 2012 Senior Unsecured Notes Semi Annual Payment, First Payment	Dec. 31, 2012 Senior Unsecured Notes Semi Annual Payment, Second Payment	Dec. 31, 2012 Promissory Notes	Dec. 28, 2012 Senior Secured Term Loan	Sep. 29, 2012 Senior Secured Term Loan	Jun. 28, 2011 Senior Secured Term Loan	Jun. 28, 2011 Revolving Credit Facility
Debt Instrument [Line Items]
Principal amount						$ 25.0
Available borrowing capacity	58.4
Initial principal amount of the debt instrument										7.0			190.0
Senior secured revolving credit facility														60.0
Debt instrument, floor rate			1.25%	2.25%
Debt instrument, Basis points			4.25%	3.25%	0.50%
Minimum quarterly principal payment amounts											15.0	10.0	0.5
Quarterly principal payments starting date													Sep. 30, 2011
Debt Instrument, Maturity Date							Jul. 15, 2018						Jun. 30, 2017	Jun. 28, 2016
Debt Instrument, Covenants													The Credit Facilities are collaterized by substantially all of our assets and contain minimum Earnings before Interest, Taxes, Depreciation and Amortization ("EBITDA") and maximum leverage ratio covenants under certain circumstances, as well as annual limitations on capital expenditures and limitation on future disposition of property, investments, acquisitions, repurchase of stock, dividends, and outside indebtedness.
EBITDA adjusted	50.0
Unused revolving lines of credit	58.4
Outstanding standby letters of credit	1.6
Increase credit facility		75.0
Senior unsecured note							200.0
Debt Instrument, Interest Rate, Stated Percentage							9.75%			5.00%
Senior Unsecured Notes, Frequency of Periodic Payment							Semi-annually
Senior unsecured notes, interest payable date								--01-15	--07-15
Debt Instrument, payment beginning date							2012
Purchase price percent equal to principal amount plus accrued and unpaid interest							101.00%
Closing date of payment										December 23
Principal amount of notes payable										3.0
Debt instrument, maturity date										2013-12-23
Fair value debt	$ 216