Operating Leases (Tables)

12 Months Ended

Dec. 31, 2012

Leases, Operating [Abstract]

Future Minimum Annual Rentals

Future minimum annual rentals for the leased facilities and the leased vehicles are as follows:

	Leased facilities		Leased vehicles	Total
2013	$	87,942	18,962	106,904
2014	64,092		10,017	74,109
2015	42,993		4,473	47,466
2016	23,343		—	23,343
2017	7,603		—	7,603
2018 and thereafter	—		—	—
	$	225,973	33,452	259,425

Rent Expense

Rent expense under all operating leases was as follows:

	Leased facilities		Leased vehicles	Total
2012	$	96,540	29,039	125,579
2011	$	95,808	23,866	119,674
2010	$	92,854	21,540	114,394