Debt (Tables)

12 Months Ended

Dec. 31, 2012

Debt [Abstract]

Schedule Of Long-Term Debt Obligations

Long-term obligations at December 31 are as follows:		2012		2011
CoBank 3 and 4, 2.55% variable rate notes maturing in 2022, with interest payable monthly and principal due annually beginning in 2003	$	31,756,775	$	33,659,141
CoBank 5, 2.55% variable rate notes maturing in 2012, with interest and principal payable monthly		0		791,177
2002 Series A Bond of 6.20%, maturing in 2012, with interest payable semi-annually February 1 and August 1		0		120,000,000
2011 Series A Bond of 4.20%, maturing in 2031, with interest payable semi-annually March 15 and September 15 and principal due annually beginning in 2012		85,500,000		90,000,000
2011 Series A Bond of 4.75%, maturing in 2041, with interest payable semi-annually March 15 and September 15 and principal due annually beginning in 2012		178,833,333		185,000,000
2012 Series A Bond of 4.01%, maturing in 2032, with interest payable semi-annually March 15 and September 15 and principal due annually beginning in 2013		75,000,000		0
2012 Series A Bond of 4.41%, maturing in 2042, with interest payable semi-annually March 15 and September 15 and principal due annually between 2013 and 2020 and between 2032 and 2042		125,000,000		0
2012 Series A Bond of 4.78%, maturing in 2042, with interest payable semi-annually March 15 and September 15 and principal due annually beginning in 2023		50,000,000		0
Total long-term obligations	$	546,090,108	$	429,450,318
Less current installments		24,493,022		133,360,210
Long-term obligations, excluding current installments	$	521,597,086	$	296,090,108

Schedule Of Maturities Of Long-Term Debt Obligations

Year ending December 31		2011 Series A Bonds		CoBank Note		2012 Series A Bonds		Total
2013		10,666,667		2,076,355		11,750,000		24,493,022
2014		10,666,667		2,266,145		11,750,000		24,682,812
2015		10,666,667		2,473,110		10,750,000		23,889,777
2016		10,666,667		2,699,313		10,750,000		24,115,980
2017		10,666,667		2,945,954		10,750,000		24,362,621
Therafter		210,999,998		19,295,898		194,250,000		424,545,896
	$	264,333,333	$	31,756,775	$	250,000,000	$	546,090,108

Schedule Of Average Commercial Paper Balances Outstanding And Weighted Average Interest Rates

Month	Average Balance	Weighted Average Interest Rate	Month	Average Balance	Weighted Average Interest Rate
January	$62.7	0.27	July	$0.0	0.00
February	$0.0	0.00	August	$0.0	0.00
March	$8.0	0.38	September	$4.2	0.34
April	$6.3	0.36	October	$9.3	0.29
May	$0.8	0.35	November	$14.5	0.28
June	$0.0	0.00	December	$11.9	0.29

Schedule Of Carrying Values And Estimated Fair Values Of Long-Term Debt Obligations

	2012				2011
	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term obligations (including current installments)	$	546,090	$	573,912	$	429,450	$	442,711