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Presentation of Financial Information - Additional Details (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2018 | Dec. 31, 2017 | Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Gross interchange and debit card transaction fees | $ 332,500 |  |
Network costs | 187,000 |  | $ 86,800
Interchange and debit card transaction fees | $ 145,536 |  | $ 192,394
Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect |  | $ 197,000 |

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- Definition Fees And Commissions, Debit Cards, Gross + References No definition available. + Details
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- Definition Fees And Commissions, Network Costs + References No definition available. + Details
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- Definition Tax Cuts and Jobs Act of 2017, Reclassification from AOCI to Retained Earnings, Tax Effect + References No definition available. + Details
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- Definition Amount of income earned from debit card services, including interchange fees, annual fees and other fees. + References No definition available. + Details
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