Operating Leases (Tables)

12 Months Ended

Dec. 31, 2011

Operating Leases [Abstract]

Future Minimum Annual Rentals

	Leased facilities		Leased vehicles		Total
2012	$	84,519		17,330		101,849
2013		62,386		9,079		71,465
2014		40,795		4,126		44,921
2015		24,683		0		24,683
2016		10,687		0		10,687
2017 and thereafter		0		0		0
	$	223,070		30,535		253,605

Rent Expense

		$00,000		$00,000		$00,000
	Leased facilities		Leased vehicles		Total
2011	$	95,808		23,866		119,674
2010	$	92,854		21,540		114,394
2009	$	91,270		26,295		117,565