Accumulated Other Comprehensive Income Reclassification Out Of Accumulated Other Comprehensive Income (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net realized gain on investment	$ (338,631)	$ 8,689	$ 601,336	$ 592,908
Prior year service cost	1,098	554	3,293	1,663
Unrecognized loss	(878)	0	(2,635)	0
Income before Income Taxes	6,436,498	3,598,490	14,592,119	9,634,049
Tax	(1,941,000)	(1,004,000)	(4,250,000)	(2,656,000)
Net Income	4,495,498	2,594,490	10,342,119	6,978,049
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net Income	(132,155)	3,840	472,149	550,994
Reclassification Out Of Accumulated Other Comprehensive Income | Unrealized Gains And Losses On Available-For-Sale Securities
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net realized gain on investment	458,058	6,534	1,390,070	840,170
Other-than-temporary impairments	(657,755)	0	(668,904)	0
Income before Income Taxes	(199,697)	6,534	721,166	840,170
Tax	68,846	(2,328)	(245,105)	(288,078)
Net Income	(130,851)	4,206	476,061	552,092
Reclassification Out Of Accumulated Other Comprehensive Income | Postretirement Benefits Plans
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Prior year service cost	(1,098)	(554)	(3,293)	(1,663)
Unrecognized loss	(878)	0	(2,635)	0
Income before Income Taxes	(1,976)	(554)	(5,928)	(1,663)
Tax	672	188	2,016	565
Net Income	$ (1,304)	$ (366)	$ (3,912)	$ (1,098)