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Investment Securities (Detail) (USD $)
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost $ 76,269,804 $ 96,401,241 $ 99,801,499
Gross Unrealized Gains 1,623,479 4,221,335 3,414,914
Gross Unrealized Losses 3,579,601 132,309 349,858
Fair Value 74,313,682 100,490,267 102,866,555
U.S. Government agencies
      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 28,360 28,360 28,360
Gross Unrealized Gains 575,000      
Gross Unrealized Losses    320   
Fair Value 603,360 28,040 28,360
State and municipal
      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 32,395,630 38,528,451 37,165,358
Gross Unrealized Gains 360,384 2,623,768 1,808,576
Gross Unrealized Losses 1,746,943 14,797 46,811
Fair Value 31,009,071 41,137,422 38,927,123
Corporate trust preferred
      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 333,395 349,646 635,239
Gross Unrealized Gains         
Gross Unrealized Losses 109,403 65,116 200,015
Fair Value 223,992 284,530 435,224
Mortgage-backed
      
Schedule of Available-for-sale Securities [Line Items]      
Amortized Cost 43,512,419 57,494,784 61,972,542
Gross Unrealized Gains 688,095 1,597,567 1,606,338
Gross Unrealized Losses 1,723,255 52,076 103,032
Fair Value $ 42,477,259 $ 59,040,275 $ 63,475,848