Accumulated Other Comprehensive Income Balances Of Each Component Of Accumulated Other Comprehensive Income, Net Of Tax (Details) (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 12,856,509	$ 11,347,404
Other comprehensive income before reclassifications	184,227	325,932
Amounts reclassified from accumulated other comprehensive income	(4,490)	(322,465)
Other comprehensive income	179,737	3,467
Ending balance	13,036,246	11,350,871
Unrealized Gains And Losses On Available-For-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	12,934,497	11,395,757
Other comprehensive income before reclassifications	184,227	325,932
Amounts reclassified from accumulated other comprehensive income	(5,794)	(322,831)
Other comprehensive income	178,433	3,101
Ending balance	13,112,930	11,398,858
Postretirement Benefits Plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(77,988)	(48,353)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income	1,304	366
Other comprehensive income	1,304	366
Ending balance	$ (76,684)	$ (47,987)

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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