Commitments and Contingencies - Additional Information (Detail)	3 Months Ended		12 Months Ended									12 Months Ended
	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2013 Marketing and Advertising Expense USD ($)	Dec. 31, 2013 Kunstmann et al summary_judgment plaintiff	Dec. 31, 2013 Kurtis Jewell plaintiff	Dec. 31, 2013 Sowell plaintiff	Dec. 31, 2013 Margaret Korrow	Dec. 31, 2013 Lomi Price motion	Dec. 31, 2013 Amendment Franchise Loan Facility CAD	Dec. 31, 2013 Minimum	Dec. 31, 2013 Minimum Lomi Price USD ($)	Dec. 31, 2013 Maximum	Dec. 31, 2013 Maximum Kurtis Jewell
Commitments and Contingencies Disclosure [Line Items]
Leases of warehouse and retail store space under operating lease, expiring time			2029
Renewal options of leases for additional periods													1 year		20 years
Lease term			15 years
Leases of transportation and computer equipment under operating leases, expiring period															5 years
Rental expense			$ 110,000,000	$ 102,000,000	$ 93,600,000
Sublease income			2,600,000	3,100,000	3,100,000
Future sublease rental income in one year			3,500,000
Future sublease rental income in two years			3,000,000
Future sublease rental income in three years			2,500,000
Future sublease rental income in four years			2,200,000
Future sublease rental income in five years			2,100,000
Future sublease rental income in five years and thereafter			5,600,000
Portion that Company might be obligated to repay in the event franchisees defaulted			105,000,000
Fair value of franchise related borrowings			2,500,000
Loan facility maximum Canadian sub facility commitment amount												50,000,000
Accrued Regulatory Expense			33,300,000
Loss Contingency In Excess of Accrual, Range of Possible Loss, Minimum			0
Loss Contingency In Excess of Accrual, Range of Possible Loss, Maximum			4,600,000
Income related to reversal of lawsuit accrual	13,400,000	15,000,000	(28,400,000)	35,500,000	(36,500,000)
Number of Plaintiffs							227	1,788	2
Statutory Penalty Damages, Per Violation										100
Number of Motions											3
Number of Summary Judgments Sought							2
Number of Summary Judgments Sought, Entirety of Class Member Claims							1
Loss Contingency, Damages Sought, Value														250,000
Percentage of class size with respect to potential class members																7.00%
Minimum range of possible loss			50,000,000
Maximum range of possible loss			8,200,000
Non-cancelable commitments						35,400,000
Non-cancelable commitments due in 2014						19,200,000
Non-cancelable commitments due in 2015						15,500,000
Non-cancelable commitments due in 2016						710,000
Maximum 401 (K) plan contribution rates as percentage of employees earnings			100.00%
Employer 401 (k) matching contribution to employee, Maximum													50.00%		100.00%
Initial Employer 401(K) Matching Contribution to Employee			4.00%										2.00%		3.00%
Compensation expense related to 401(k) savings plan			$ 3,300,000	$ 999,000	$ 891,000