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Note 12 - Subordinated Debentures (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2005
Subordinated Debt, Ending Balance $ 21,760,829 $ 15,465,000  
Guaranty Statutory Trust I [Member]      
Guarantor Obligations, Maximum Exposure, Undiscounted     $ 5,000,000
Subordinated Debt, Ending Balance     5,155,000
Guaranty Statutory Trust II [Member]      
Guarantor Obligations, Maximum Exposure, Undiscounted     10,000,000
Subordinated Debt, Ending Balance     $ 10,310,000
Hometown Bancshares Capital Trust I [Member]      
Guarantor Obligations, Maximum Exposure, Undiscounted 6,000,000    
Subordinated Debt, Ending Balance $ 6,186,000    
Trust Preferred Securities, Call Rate 100.00%    
Hometown Bancshares Capital Trust I [Member] | Maximum [Member]      
Debt Instrument, Interest Rate, Stated Percentage 12.50%    
Hometown Bancshares Capital Trust I [Member] | Rate Until May 2019 [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 5.00%    
Hometown Bancshares Capital Trust I [Member] | Rate After May 2019 [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument, Basis Spread on Variable Rate 6.00%