Goodwill and Other Intangibles Assets (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Other Intangible Assets [Abstract]

Schedule of Goodwill

Balance as of December 31, 2011	$	4,264,845
Goodwill acquired as part of acquisitions during 2012		130,661
Consideration adjustments and purchase price allocation
adjustments for prior year’s acquisitions		1,967
Balance as of September 30, 2012	$	4,397,473