Supplemental Disclosures Of Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2011

Supplemental Disclosures Of Cash Flow Information [Abstract]

Schedule Of Significant Non-Cash Investing And Financing Activities

(in thousands)	2011		2010		2009
Unrealized holding gain (loss) on available-for-sale securities, net of tax effect of $0 for 2011, net of tax effect of $1 for 2010 and net of tax benefit of $5 for 2009		—		2		(8	)
Notes payable issued or assumed for purchased customer accounts	$	1,603	$	3,821	$	22,645
Estimated acquisition earn-out payables and related charges	$	30,525	$	25,090	$	7,226
Notes received on the sale of fixed assets and customer accounts	$	8,166	$	1,825	$	(958	)