Intangible Assets - Schedule of Expected Amortization Expense (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Gross carrying amount	$ 2,405,988
Accumulated amortization	2,078,950
Net carrying amount	327,038	546,519
Amortization expense	219,482	219,357	207,638
Core Deposits Premiums [Member]
Gross carrying amount	1,892,540
Accumulated amortization	1,682,977
Net carrying amount	209,563	391,304
Amortization expense	181,742
Account Relationships [Member]
Gross carrying amount	513,448
Accumulated amortization	395,973
Net carrying amount	117,475	155,215
Amortization expense	37,740
2013 [Member]
Gross carrying amount	2,292,540
Accumulated amortization	2,181,203
Net carrying amount	111,337
Amortization expense	215,700
2013 [Member] | Core Deposits Premiums [Member]
Gross carrying amount	1,892,540
Accumulated amortization	1,864,719
Net carrying amount	27,821
Amortization expense	181,742
2013 [Member] | Account Relationships [Member]
Gross carrying amount	400,000
Accumulated amortization	316,484
Net carrying amount	83,516
Amortization expense	33,958
2014 [Member]
Gross carrying amount	2,070,415
Accumulated amortization	2,004,009
Net carrying amount	66,406
Amortization expense	44,932
2014 [Member] | Core Deposits Premiums [Member]
Gross carrying amount	1,670,415
Accumulated amortization	1,670,415
Net carrying amount	0
Amortization expense	27,822
2014 [Member] | Account Relationships [Member]
Gross carrying amount	400,000
Accumulated amortization	333,594
Net carrying amount	66,406
Amortization expense	17,110
2015 [Member]
Gross carrying amount	125,000
Accumulated amortization	74,219
Net carrying amount	50,781
Amortization expense	15,625
2015 [Member] | Core Deposits Premiums [Member]
Gross carrying amount	0
Accumulated amortization	0
Net carrying amount	0
Amortization expense	0
2015 [Member] | Account Relationships [Member]
Gross carrying amount	125,000
Accumulated amortization	74,219
Net carrying amount	50,781
Amortization expense	15,625
2016 [Member]
Gross carrying amount	125,000
Accumulated amortization	89,844
Net carrying amount	35,156
Amortization expense	15,625
2016 [Member] | Core Deposits Premiums [Member]
Gross carrying amount	0
Accumulated amortization	0
Net carrying amount	0
Amortization expense	0
2016 [Member] | Account Relationships [Member]
Gross carrying amount	125,000
Accumulated amortization	89,844
Net carrying amount	35,156
Amortization expense	15,625
2017 [Member]
Gross carrying amount	125,000
Accumulated amortization	105,468
Net carrying amount	19,532
Amortization expense	15,625
2017 [Member] | Core Deposits Premiums [Member]
Gross carrying amount	0
Accumulated amortization	0
Net carrying amount	0
Amortization expense	0
2017 [Member] | Account Relationships [Member]
Gross carrying amount	125,000
Accumulated amortization	105,468
Net carrying amount	19,532
Amortization expense	$ 15,625