Commitments and Contingencies (Financial Instruments with Off-Balance-Sheet Risk) (Details) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Commitments to Extend Credit [Member]
Financial instruments with off-balance-sheet risk	$ 4,613,486	$ 4,528,196
Deferred Standby Letter of Credit Fees [Member]
Financial instruments with off-balance-sheet risk	1,339	1,707
Standby Letters of Credit [Member]
Financial instruments with off-balance-sheet risk	$ 238,889	$ 294,116