Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Estimated Useful Lives Of Assets

Building and improvements	1 year to 39 years
Medical rental equipment	1.5 years to 11 years
Other equipment and furniture	3 years to 25 years

Schedule Of Operating Expenses By Category

Operating Expenses (in thousands)	Year Ended December 31,
	2011		2010		2009
Salary and related	$	279,058	$	259,854	$	261,035
Facilities		60,747		62,886		58,446
Vehicles		54,555		47,143		42,851
General supplies/miscellaneous		33,598		29,510		27,427
Total	$	427,958	$	399,393	$	389,759