LOAN PORTFOLIO COMPOSITION - Recorded Balance at Original Cost of Troubled Debt Restructurings which were Performing According to Terms of Restructuring (Details 6) - Loans Receivable - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	$ 1,654,084	$ 1,622,112
Real estate loans | One-to-four family residential
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	587,786	526,004
Real estate loans | Commercial real estate
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	$ 926,284	$ 941,173
Real estate loans | Agricultural real estate
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing
Real estate loans | Home equity
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	$ 9,344	$ 10,897
Commercial loans
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	$ 48,154	$ 57,783
Agricultural loans
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing
Consumer loans
Accounts Notes And Loans Receivable [Line Items]
Troubled debt restructurings, original cost, performing	$ 82,516	$ 86,255