Accumulated Other Comprehensive Income Reclassification Out Of Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net realized gain on investment	$ 195,800		$ 1,066,239		$ 28,559
Impairments of other assets and investments			(93,436)		(280,987)
Unrecognized prior service credit (cost)	(1,518)		9,396		13,038
Unrecognized loss	(6,293)		(680)		318
Income before Income Taxes	21,542,738		16,079,907		9,498,936
Tax	(6,746,000)		(4,889,000)		(2,565,000)
Net income	14,796,738		11,190,907		6,933,936
Reclassification Out Of Accumulated Other Comprehensive Income
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net income	127,171		668,143		13,598
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	229,869		1,166,179		353,950
Impairments of other assets and investments	(34,070)		(99,940)		(325,391)
Income before Income Taxes	195,799		1,066,239		28,559
Tax	(65,488)		(391,448)		(6,567)
Net income	130,311		674,791		21,992
Reclassification Out Of Accumulated Other Comprehensive Income | Postretirement Benefits Plans
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Unrecognized prior service credit (cost)	1,518		(9,396)		(13,038)
Unrecognized loss	(6,293)		(680)		318
Income before Income Taxes	(4,775)	[1]	(10,076)	[1]	(12,720)	[1]
Tax	1,635		3,428		4,326
Net income	$ (3,140)		$ (6,648)		$ (8,394)

[1] These accumulated other comprehensive income components are not reclassified to net income in their entirety in the same reporting period. The amounts are presented within Salaries, employee benefits and payroll taxes on the Consolidated Statements of Income as amortized. Amortization related to postretirement benefit plans is included in the computation of net periodic pension costs, as discussed in Note 10.