Fair Values Of Assets And Liabilities (Tables)

6 Months Ended

Jun. 30, 2016

Fair Values Of Assets And Liabilities [Abstract]

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

	Measurement	Carrying Value		Fair Value
2011 CoBank Note	Level 2	$	22,242	$	22,242
2011 Series A Bonds	Level 2		221,667		241,702
2012 Series A Bonds	Level 2		205,000		220,235
2016 CoBank Note	Level 2		45,600		44,973
Long-term obligations (including current installments)		$	494,509	$	529,152