Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum commitments under the operating lease agreements

Year ending December 31:
2014	$	46,060
2015	45,194
2016	42,436
2017	39,129
2018	33,218
Thereafter	116,593
	$	322,630

Component of total rental expense

	Years Ended December 31,
	2013		2012		2011
Minimum rentals	$	47,871	$	37,270	$	26,645
Contingent rentals	12,318		9,366		6,085
	$	60,189	$	46,636	$	32,730

Schedule of future commitments under purchase orders and other agreements

Contract Effective Date	Final Target Date	Advance Deposit	Total Minimum Commitment	Remaining Deposit	Remaining Commitment, Net of Deposit
October 2011	September 2014	$50,000	$286,000	$38,273	$13,034
October 2012	September 2013	—	$83,000	—	$3,265
April 2013	September 2014	$28,931	$42,800	$28,931	$13,869
September 2013	September 2014	—	$50,730	—	$39,958