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Summary Of Significant Accounting Policies (Summary Of Activity Recorded Within The Allowance For Doubtful Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]
Beginning balance	$ 4,481	$ 4,614	$ 3,504
Bad debt expense	910	920	1,799
Reserves from acquisitions	183	189	896
Accounts written off and other adjustments	(800)	(1,242)	(1,585)
Ending balance	$ 4,774	$ 4,481	$ 4,614

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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