Securities (Summary Of Securities) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Current [Member]
Schedule of Held-to-maturity Securities [Line Items]
Aggregate fair value	$ 8,237,423	$ 5,457,842
Gross unrealized holding gains	(2,641)	(1,279)
Gross unrealized holding losses	154	26
Amortized cost basis	8,234,936	5,456,589
Accrued interest	8,254	12,086
Amounts shown on balance sheets	8,243,190	5,468,675
Noncurrent [Member]
Schedule of Held-to-maturity Securities [Line Items]
Aggregate fair value		2,880,219
Gross unrealized holding gains		(442)
Gross unrealized holding losses		294
Amortized cost basis		2,880,071
Accrued interest		3,180
Amounts shown on balance sheets		$ 2,883,251