Accumulated Other Comprehensive Income Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 11,347,404	$ 8,818,430
Other comprehensive income before reclassifications	325,932	1,570,244
Amounts reclassified from accumulated other comprehensive income	(322,465)	(10,694)
Other comprehensive income	3,467	1,559,550
Ending balance	11,350,871	10,377,980
Unrealized Gains And Losses On Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	11,395,757	8,920,883
Other comprehensive income before reclassifications	325,932	1,570,244
Amounts reclassified from accumulated other comprehensive income	(322,831)	(11,482)
Other comprehensive income	3,101	1,558,762
Ending balance	11,398,858	10,479,645
Postretirement Benefits Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(48,353)	(102,453)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	366	788
Other comprehensive income	366	788
Ending balance	$ (47,987)	$ (101,665)