Fair Value Of Assets And Liabilities (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Of Assets And Liabilities [Abstract]

Schedule Of Marketable Securities

	December 31, 2016		Level 1
Bond funds/Certificates of Deposit	$	10,436,815	$	10,436,815

Schedule Of Estimated Fair Value Of Long-Term Obligations Included In Financial Statements

	Measurement	Carrying Value		Fair Value
2011 Series A Bonds	Level 2	$	221,667	$	231,057
2012 Series A Bonds	Level 2		205,000		209,242
2016 CoBank Note	Level 2		43,776		40,921
Long-term obligations (including current installments)		$	470,443	$	481,220