Accumulated Other Comprehensive Income Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 11,350,871	$ 10,377,980	$ 11,347,404	$ 8,818,430
Other comprehensive income before reclassifications	1,447,244	(1,081,096)	1,953,080	489,148
Amounts reclassified from accumulated other comprehensive income	(44,785)	(35,883)	(547,154)	(46,577)
Other comprehensive income (loss)	1,402,459	(1,116,979)	1,405,926	442,571
Ending balance	12,753,330	9,261,001	12,753,330	9,261,001
Unrealized Gains And Losses On Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	11,398,858	10,479,645	11,395,757	8,920,883
Other comprehensive income before reclassifications	1,447,244	(1,081,096)	1,953,080	489,148
Amounts reclassified from accumulated other comprehensive income	(45,151)	(36,670)	(547,886)	(48,152)
Other comprehensive income (loss)	1,402,093	(1,117,766)	1,405,194	440,996
Ending balance	12,800,951	9,361,879	12,800,951	9,361,879
Postretirement Benefits Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(47,987)	(101,665)	(48,353)	(102,453)
Other comprehensive income before reclassifications	0	0	0	0
Amounts reclassified from accumulated other comprehensive income	366	787	732	1,575
Other comprehensive income (loss)	366	787	732	1,575
Ending balance	$ (47,621)	$ (100,878)	$ (47,621)	$ (100,878)