Note 3 - Loans and Allowance for Loan Losses (Details Textual) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Impaired Financing Receivable, Guaranteed by Small Business Administration | $ 0.1 | $ 1.5 |
Servicing Mortgage Loans [Member] | ||
Servicing Asset, Loans Serviced, Amount | 38.8 | |
Servicing SBA Loans [Member] | ||
Servicing Asset, Loans Serviced, Amount | $ 14.9 | |
Multi-family Residential Property and Commercial Real Estate and Commerical Business and Other Loans [Member] | ||
Loan Origination, Underwriting Requirements, Minimum Debt Service Coverage | 125.00% | |
Loan Origination, Value, Maximum Percentage | 75.00% | |
Multi-family Residential Property and Commercial Real Estate and Commerical Business and Other Loans [Member] | Gross Loans [Member] | Credit Concentration Risk [Member] | ||
Concentration Risk, Percentage | 84.80% | 83.50% |