Long-Term Debt - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			3 Months Ended				1 Months Ended			1 Months Ended			3 Months Ended
	May 05, 2013 Person	Apr. 29, 2012	Apr. 30, 2013	May 05, 2013 Minimum	May 05, 2013 Maximum	May 05, 2013 Senior Notes	Jul. 30, 2013 Subsequent Event	May 14, 2013 Subsequent Event Second Amendment	May 14, 2013 Subsequent Event Second Amendment Greater than or equal to 2.75:1.00	May 14, 2013 Subsequent Event Second Amendment Greater than or equal to 2.75:1.00 Minimum	May 14, 2013 Subsequent Event Second Amendment Less than 2.75:1.00	May 14, 2013 Subsequent Event Second Amendment Less than 2.75:1.00 Maximum	May 05, 2013 Federal Funds Effective Rate plus	May 05, 2013 Term Loan	May 05, 2013 Revolving credit facility	May 05, 2013 Letter of credit sub-facility	May 05, 2013 Sub-facility	May 05, 2013 Swingline sub-facility
Line of Credit Facility [Line Items]
Senior secured credit facility														$ 150,000	$ 50,000	$ 20,000	$ 1,000	$ 5,000
Maturity Date						Jun. 01, 2018								Jun. 01, 2016	Jun. 01, 2015
Proceeds from term loan facility	148,500
Debt issuance discount cost	1,500
Letters of credit outstanding	5,670
Credit facility, current borrowing														145,267	0
Credit facility, current borrowing, net of discount														144,533
Interest Rate														5.50%
Senior secured credit facility, variable interest rate and interest rate in addition to base rate				2.50%	4.50%								0.50%
Letters of credit issued, minimum	12,000
Reduction in term loan margin									0.75%		0.25%
Leverage ratio					4.25					2.75		2.75
Reduction in LIBOR floor rate								0.25%
Fixed charge coverage ratio				1.15
Required fixed charge coverage ratio				1.30
Required leverage ratio					3.25
Number of creditors for senior secured credit facility	22
Percentage of term loan held by Oak Hill Advisors, L.P.	9.43%
Term loan held by Oak Hill Advisors, L.P.	13,695
Interest Rate						11.00%
Frequency of interest payments - Senior Notes						Semi-annually
Redemption price of notes as percentage of principal amount				100.00%	105.50%
Redemption date of notes	Jun. 01, 2014
Senior notes	200,000
Senior notes fair value	225,800
Consolidated coverage ratio	2
Principal amount due			375				233
Repayments of senior secured credit facility	$ 608	$ 375