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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

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 + Details
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