Commitments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	6 Months Ended
	Mar. 20, 2012	Jun. 30, 2012 LegalMatter Person
Commitments and Contingencies Disclosure [Line Items]
Leases of warehouse and retail store space under operating lease, expiring time		2028
Maximum amount that the Company might be obligated to repay in the event franchisees defaulted		$ 116.2
Number of plaintiffs		247
Number of days allowed by court to conduct third party discovery	60 days
Number of plaintiffs signed settlement agreement		3
Number of lawsuits dismissed		3
Number of employees opted for lawsuit		20
Minimum range of probable loss		0
Maximum range of probable loss		4.9
Minimum range of possible loss		0
Maximum range of possible loss		11.8
Franchise Loan Program
Commitments and Contingencies Disclosure [Line Items]
Maximum amount that the Company might be obligated to repay in the event franchisees defaulted		94.4
Other Debt Facilities
Commitments and Contingencies Disclosure [Line Items]
Maximum amount that the Company might be obligated to repay in the event franchisees defaulted		21.8
Minimum
Commitments and Contingencies Disclosure [Line Items]
Renewal options of leases for additional periods		1 year
Maximum
Commitments and Contingencies Disclosure [Line Items]
Renewal options of leases for additional periods		15 years
Leases of transportation and computer equipment under operating leases, expiring period		5 years
Advertising and Marketing Programs
Commitments and Contingencies Disclosure [Line Items]
Non-cancelable commitments		28.6
Vehicles
Commitments and Contingencies Disclosure [Line Items]
Non-cancelable commitments		$ 13.4