Commitments and Contingencies - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Commitments And Contingencies Disclosure [Abstract]
Rent expense on operating leases	$ 60,479	$ 50,908	$ 46,411
Contingent rental expense	2,201	1,789	1,426
Interest expense	1,610	1,560	1,205
Deduction in general insurance policy liability per claim	150
Workers compensation	300
Accrued claims related to self insurance general liability and workers compensation insurance liability	$ 2,160	$ 1,911