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Securities (Tables)
9 Months Ended
Sep. 30, 2012
Securities [Abstract]  
Amortized cost and estimated fair value of securities available for sale
Amortized cost and estimated fair value of securities available for sale are as follows:

September 30, 2012
Amortized Cost
Unrealized Gains
Unrealized Losses
Estimated Fair Value
Obligations of U.S. Government and U.S. Government
  sponsored enterprises
$
142,730,477
$
3,920,177
$
-
$
146,650,654
Mortgage-backed securities, residential
33,801,646
2,484,121
-
36,285,767
Collateralized Mortgage obligations
4,653,401
74,909
931
4,727,379
Obligations of states and political subdivisions
39,800,910
1,810,542
1,838
41,609,614
Corporate bonds and notes
13,421,730
346,574
3,464
13,764,840
SBA loan pools
1,743,803
39,587
-
1,783,390
Trust Preferred securities
2,517,440
127,991
183,425
2,462,006
Corporate stocks
744,715
5,645,849
5,260
6,385,304
     Total
$
239,414,122
$
14,449,750
$
194,918
$
253,668,954


December 31, 2011
Amortized Cost
Unrealized Gains
Unrealized Losses
Estimated Fair Value
Obligations of U.S. Government and U.S. Government
  sponsored enterprises
$
149,140,715
$
3,022,726
$
83,671
$
152,079,770
Mortgage-backed securities, residential
48,129,271
2,637,334
-
50,766,605
Collateralized mortgage obligations
7,412,471
135,603
11,321
7,536,753
Obligations of states and political subdivisions
44,561,789
1,954,265
3,083
46,512,971
Corporate bonds and notes
13,461,675
418,969
196,446
13,684,198
SBA loan pools
1,915,419
34,187
-
1,949,606
Trust preferred securities
2,538,285
132,516
360,735
2,310,066
Corporate stocks
788,030
5,246,655
4,844
6,029,841
     Total
$
267,947,655
$
13,582,255
$
660,100
$
280,869,810

Amortized cost and estimated fair value of securities held to maturity
Amortized cost and estimated fair value of securities held to maturity are as follows:

September 30, 2012
Amortized Cost
Unrealized Gains
Unrealized Losses
Estimated Fair Value
Obligations of states and political subdivisions
$
6,162,503
$
718,669
$
-
$
6,881,172

 
December 31, 2011
Amortized Cost
Unrealized Gains
Unrealized Losses
Estimated Fair Value
Obligations of states and political subdivisions
$
8,311,921
$
864,035
$
-
$
9,175,956

Amortized cost and estimated fair value of debt securities by contractual maturity
The amortized cost and estimated fair value of debt securities are shown below by expected maturity.  Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations with or without call or prepayment penalties.  Securities not due at a single maturity date are shown separately:

September 30, 2012
Available for Sale
Held to Maturity
Amortized
Fair
Amortized
Fair
Cost
Value
Cost
Value
Within One Year
$
58,024,142
$
58,383,376
$
1,606,365
$
1,633,074
After One, But Within Five Years
133,178,606
138,326,611
3,147,444
3,490,139
After Five, But Within Ten Years
6,638,784
7,331,527
1,408,694
1,757,959
After Ten Years
629,025
445,600
-
-
Mortgage-backed securities, residential
33,801,646
36,285,767
-
-
Collateralized mortgage obligations
4,653,401
4,727,379
-
-
SBA loan pools
1,743,803
1,783,390
-
-
     Total
$
238,669,407
$
247,283,650
$
6,162,503
$
6,881,172

Investment securities in an unrealized loss position
The following tables summarize the investment securities available for sale and held to maturity with unrealized losses at September 30, 2012 and December 31, 2011 by aggregated major security type and length of time in a continuous unrealized loss position:

Less than 12 months
12 months or longer
Total
September 30, 2012
Fair Value
Unrealized
Losses
Fair Value
Unrealized
Losses
Fair Value
Unrealized
Losses
Collateralized mortgage obligations
$
22,087
$
70
$
178,729
$
861
$
200,816
$
931
Obligations of states and political subdivisions
430,847
1,838
-
-
430,847
1,838
Corporate bonds and notes
-
-
494,297
3,464
494,297
3,464
Trust preferred securities
-
-
445,600
183,425
445,600
183,425
Corporate stocks
-
-
48,370
5,260
48,370
5,260
     Total temporarily
        impaired securities
$
452,934
$
1,908
$
1,166,996
$
193,010
$
1,619,930
$
194,918


Less than 12 months
12 months or longer
Total
December 31, 2011
Fair Value
Unrealized
Losses
Fair Value
Unrealized
Losses
Fair Value
Unrealized
Losses
Obligations of U.S. Government and U.S. Government sponsored enterprises
$
27,365,920
$
83,671
$
-
$
-
$
27,365,920
$
83,671
Collateralized mortgage obligations
2,546,461
11,321
-
-
2,546,461
11,321
Obligations of states and political subdivisions
947,203
3,083
-
-
947,203
3,083
Corporate bonds and notes
5,261,074
196,446
-
-
5,261,074
196,446
Trust preferred securities
-
-
294,910
360,735
294,910
360,735
Corporate stocks
1,669
1,969
47,117
2,875
48,786
4,844
     Total temporarily
        impaired securities
$
36,122,327
$
296,490
$
342,027
$
363,610
$
36,464,354
$
660,100

Roll forward of the cumulative credit losses recognized in earnings
The tables below present a roll forward of the cumulative credit losses recognized in earnings for the three and nine-month periods ending September 30, 2012 and 2011:

2012
2011
Beginning balance, January 1,
$
3,506,073
$
3,438,673
Amounts related to credit loss for which an other-than-temporary
     impairment was not previously recognized
-
-
Additions/Subtractions:
  Amounts realized for securities sold during the period
-
-
  Amounts related to securities for which the company intends to sell
     or that it will be more likely than not that the company will be required to
     sell prior to recovery of amortized cost basis
-
-
  Reductions for increase in cash flows expected to be collected that are
     recognized over the remaining life of the security
-
-
  Increases to the amount related to the credit loss for which other-than-temporary
     impairment was previously recognized
-
67,400
Ending balance, September 30,
$
3,506,073
$
3,506,073

Beginning balance, July 1,
$
3,506,073
$
3,438,673
Amounts related to credit loss for which an other-than-temporary
     impairment was not previously recognized
-
-
Additions/Subtractions:
  Amounts realized for securities sold during the period
-
-
  Amounts related to securities for which the company intends to sell
     or that it will be more likely than not that the company will be required to
     sell prior to recovery of amortized cost basis
-
-
  Reductions for increase in cash flows expected to be collected that are
     recognized over the remaining life of the security
-
-
  Increases to the amount related to the credit loss for which other-than-temporary
     impairment was previously recognized
-
67,400
Ending balance, September 30,
$
3,506,073
$
3,506,073