Basis of Presentation and Recently Issued Accounting Pronouncements - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2014
Minimum [Member]
Number Of Weeks In Fiscal Period [Line Items]
Retail operations period of fiscal year	52 Weeks
Retail operations period of fiscal quarter	13 Weeks
Maximum [Member]
Number Of Weeks In Fiscal Period [Line Items]
Retail operations period of fiscal year	53 Weeks
Retail operations period of fiscal quarter	14 Weeks