Acquisitions (Tables)

3 Months Ended

Mar. 31, 2012

Acquisitions [Abstract]

Consideration transferred and the amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired at the acquisition date

	2012 Acquisitions			2011 Acquisitions
Fair value of consideration transferred:
Cash	$	138,908		$	814
Contingent consideration		602			—
		139,510			814
Recognized amounts of identifiable assets acquired and liabilities assumed associated with businesses acquired:
Accounts receivable		6,315			183
Other current assets		603			3
Property and equipment		22,450			106
Long-term franchise agreements and contracts		5,521			—
Customer lists		19,011			194
Indefinite-lived intangibles		35,345			—
Accounts payable		(1,982	)		(46	)
Accrued liabilities		(1,143	)		(32	)
Deferred revenue		(4,885	)		(374	)
Other long-term liabilities		(1,362	)		—
Total identifiable net assets		79,873			34
Goodwill	$	59,637		$	780