Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of rent expense associated with operating leases

The table below presents rent expenses associated with operating leases for the past three years (in thousands):

2014		2013		2012
$	60,214	$	58,188	$	59,873

Future minimum lease payments related to non-cancelable operating leases

The table below sets forth the approximate future minimum lease payments as of December 31, 2014 related to non-cancelable operating leases and the non-cancelable portion of certain vehicle operating leases with initial terms of one year or more (in thousands):

2015	$	40,296
2016	36,344
2017	27,629
2018	19,669
2019	12,800
Thereafter	12,862