DISCLOSURES ABOUT FAIR VALUE OF ASSETS - Fair Value Measurement of Assets Measured at Fair Value on Nonrecurring Basis (Details 1) - USD ($)	Mar. 31, 2017	Dec. 31, 2016
Significant Unobservable Inputs (Level 3) | Impaired loans (collateral dependent)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 1,475,184	$ 1,157,329
Significant Unobservable Inputs (Level 3) | Real estate owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	194,204
Significant Unobservable Inputs (Level 3) | Mortgage servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis		552,827
Nonrecurring | Impaired loans (collateral dependent)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	1,475,184	1,157,329
Nonrecurring | Real estate owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	194,204
Nonrecurring | Mortgage servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis		552,827
Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Impaired loans (collateral dependent)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Real estate owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Significant Other Observable Inputs (Level 2) | Impaired loans (collateral dependent)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Significant Other Observable Inputs (Level 2) | Real estate owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Significant Other Observable Inputs (Level 2) | Mortgage servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis
Nonrecurring | Significant Unobservable Inputs (Level 3) | Impaired loans (collateral dependent)
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	1,475,184	1,157,329
Nonrecurring | Significant Unobservable Inputs (Level 3) | Real estate owned
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis	$ 194,204
Nonrecurring | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets measured at fair value on a nonrecurring basis		$ 552,827