Summary Of Significant Accounting And Reporting Policies (Schedule Of Allowance For Doubtful Accounts) (Details) (Allowance For Doubtful Accounts [Member], USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Allowance For Doubtful Accounts [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Beginning Balance	$ 3,400,000		$ 4,300,000
Net Additions/(Reductions) to Costs and Expenses	(577)		(802,929)
Deductions and Other Adjustments	577	[1]	(97,071)	[2]
Ending Balance	$ 3,400,000		$ 3,400,000

[1] Represents excess recoveries and other adjustments over accounts written off.

[2] Represents excess of accounts written off over recoveries and other adjustments.