Investments In Associated Organizations (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Schedule of Cost-method Investments [Line Items]
Total investments in associated organizations	$ 9,349,311	$ 9,635,519
NRUCFC [Member]
Schedule of Cost-method Investments [Line Items]
Total investments in associated organizations	6,095,980	6,095,980
CoBank [Member]
Schedule of Cost-method Investments [Line Items]
Total investments in associated organizations	3,188,490	3,475,664
NRUCFC Capital Term Certificates And Other [Member]
Schedule of Cost-method Investments [Line Items]
Total investments in associated organizations	$ 64,841	$ 63,875