Note 17 - Fair Values - Financial Assets Measured at the Fair Value on Recurring and Non-recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 |
Securities available for sale | $ 152,790 | $ 144,978 | |
Recorded investment, total | 15,131 | 31,776 | $ 71,993 |
Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 152,790 | 144,978 | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 152,790 | 144,978 | |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Portfolio Segment [Member] | Impaired Loans [Member] | | | |
Recorded investment, total | 87 | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Recorded investment, total | 87 | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Construction Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Farmland Loans [Member] | | | |
Recorded investment, total | 585 | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Nonfarm Nonresidential [Member] | | | |
Recorded investment, total | | 139 | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | Construction Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | Farmland Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | Nonfarm Nonresidential [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | Construction Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | Farmland Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | Nonfarm Nonresidential [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Construction Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Farmland Loans [Member] | | | |
Recorded investment, total | 585 | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Nonfarm Nonresidential [Member] | | | |
Recorded investment, total | | 139 | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Construction Loans [Member] | | | |
Other real-estate | 6,571 | 12,344 | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Farmland Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Nonfarm Nonresidential [Member] | | | |
Other real-estate | | 6,746 | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] | Construction Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] | Farmland Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] | Nonfarm Nonresidential [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] | Construction Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] | Farmland Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] | Nonfarm Nonresidential [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] | Construction Loans [Member] | | | |
Other real-estate | 6,571 | 12,344 | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] | Farmland Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] | Nonfarm Nonresidential [Member] | | | |
Other real-estate | | 6,746 | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Multifamily Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | One- to Four-family Residential Properties [Member] | | | |
Recorded investment, total | 1,261 | 1,362 | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | Multifamily Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | One- to Four-family Residential Properties [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | Multifamily Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | One- to Four-family Residential Properties [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | Multifamily Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | One- to Four-family Residential Properties [Member] | | | |
Recorded investment, total | 1,261 | 1,362 | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Multifamily Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | One- to Four-family Residential Properties [Member] | | | |
Other real-estate | 250 | 124 | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] | Multifamily Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] | One- to Four-family Residential Properties [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] | Multifamily Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] | One- to Four-family Residential Properties [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] | Multifamily Loans [Member] | | | |
Other real-estate | | | |
Fair Value, Measurements, Nonrecurring [Member] | Residential Portfolio Segment [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] | One- to Four-family Residential Properties [Member] | | | |
Other real-estate | 250 | 124 | |
Fair Value, Measurements, Nonrecurring [Member] | Consumer Portfolio Segment [Member] | Impaired Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Consumer Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Consumer Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Consumer Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Agriculture Portfolio Segment [Member] | Impaired Loans [Member] | | | |
Recorded investment, total | 59 | | |
Fair Value, Measurements, Nonrecurring [Member] | Agriculture Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Agriculture Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Agriculture Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Recorded investment, total | 59 | | |
Fair Value, Measurements, Nonrecurring [Member] | Other Portfolio Segment [Member] | Impaired Loans [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Other Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Other Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Recorded investment, total | | | |
Fair Value, Measurements, Nonrecurring [Member] | Other Portfolio Segment [Member] | Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Recorded investment, total | | | |
US Treasury and Government [Member] | | | |
Securities available for sale | 34,099 | 33,262 | |
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 34,099 | 33,262 | |
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 34,099 | 33,262 | |
US Treasury and Government [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |
Residential Mortgage Backed Securities [Member] | | | |
Securities available for sale | 102,353 | 102,662 | |
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 102,353 | 102,662 | |
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 102,353 | 102,662 | |
Residential Mortgage Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |
Collateralized Debt Obligations [Member] | | | |
Securities available for sale | 11,203 | | |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 11,203 | | |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 11,203 | | |
Collateralized Debt Obligations [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |
US States and Political Subdivisions Debt Securities [Member] | | | |
Securities available for sale | 2,045 | 6,861 | |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 2,045 | 6,861 | |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 2,045 | 6,861 | |
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |
Corporate Debt Securities [Member] | | | |
Securities available for sale | 3,090 | 2,193 | |
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | | | |
Securities available for sale | 3,090 | 2,193 | |
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | | | |
Securities available for sale | | | |
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | | | |
Securities available for sale | 3,090 | 2,193 | |
Corporate Debt Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | | | |
Securities available for sale | | | |