Major Income Classifications Included in Other Income Under Non Interest Income on Income Statement (Detail) (USD $)
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12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Component of Other Income, Nonoperating [Line Items] | |||
Other income | $ 1,399,209 | $ 1,324,130 | $ 1,212,534 |
BOLI Insurance
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Component of Other Income, Nonoperating [Line Items] | |||
Other income | 567,440 | 636,657 | 552,913 |
Mortgage loan origination fees
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Component of Other Income, Nonoperating [Line Items] | |||
Other income | 486,136 | 354,407 | 434,734 |
Other income
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Component of Other Income, Nonoperating [Line Items] | |||
Other income | $ 345,633 | $ 333,066 | $ 224,887 |