Note 9 - Loans (Details Textual) $ in Thousands | 9 Months Ended | 12 Months Ended |
Dec. 31, 2017USD ($) | Mar. 31, 2017USD ($) |
Maximum Loan to One Borrower Limitation, Percentage of Capital Funds | 15.00% | |
Maximum Loan to One Borrower Limitation | $ 1,900 | |
Additional Loan to One Borrower Limitation if Collateralized, Percentage of Adjusted Capital Funds | 10.00% | |
Adjusted Capital Funds Value | $ 1,300 | |
Financing Receivable, Modifications, Recorded Investment | 1,942 | $ 2,376 |
Financing Receivable, Recorded Investment, Nonaccrual Status | 1,985 | 1,911 |
Impaired Financing Receivable, Average Recorded Investment | 4,296 | 5,225 |
Impaired Financing Receivable, Interest Income, Cash Basis Method | 102 | $ 173 |
Financing Receivable Nonaccrual, Downgraded from Accruing Status | 697 | |
Allowance for Loan and Lease Losses, Write-offs | $ 50 | |
Allowance for Loan Loss to Loans Outstanding Ratio | 1.19% | |
Increase (Decrease) in Non-performing Assets | $ (320) | |
Non-performing Assets As Percentage of Total Assets | 4.09% | 4.38% |
Partial Charge-offs [Member] | | |
Allowance for Loan and Lease Losses, Write-offs | $ 50 | $ 175 |
Total Charge-offs [Member] | | |
Allowance for Loan and Lease Losses, Write-offs | | 40 |
Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | $ 327 | $ 1,296 |
Nonperforming Financial Instruments [Member] | Payment Deferral [Member] | | |
Financing Receivable, Modifications, Number of Contracts | 6 | |
Financing Receivable, Modifications, Recorded Investment | $ 871 | |
In Non-accrual Status [Member] | | |
Financing Receivable, Number of Contracts, Nonaccrual Status | 16 | 17 |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 2,300 | $ 3,200 |
Increase (Decrease) in Finance Receivables | (895) | |
Proceeds from Collection of Loans Receivable | $ 9 | |
Residential Portfolio Segment [Member] | | |
Financing Receivable, Modifications, Number of Contracts | | 1 |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 1,308 | $ 1,180 |
Financing Receivable Non-accrual, Returned to Accruing Status | 222 | |
Financing Receivable Nonaccrual Status, Transferred to Real Estate Owned | 410 | |
Financing Receivable Nonaccrual, Downgraded from Accruing Status | 385 | |
Allowance for Loan and Lease Losses, Write-offs | 0 | 102 |
Residential Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | $ 327 | 740 |
Residential Portfolio Segment [Member] | Maximum [Member] | | |
Loan Origination, Percentage of Appraised Value or Selling Price | 80.00% | |
Owner Occupied Property [Member] | Maximum [Member] | | |
Loan Term | 30 years | |
Non-owner Occupied Property [Member] | Maximum [Member] | | |
Loan Term | 30 years | |
Commercial Real Estate Portfolio Segment [Member] | | |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 547 | 506 |
Financing Receivable, Non-accrual Status, Sold During Period | 253 | |
Financing Receivable Nonaccrual, Downgraded from Accruing Status | 298 | |
Allowance for Loan and Lease Losses, Write-offs | 50 | 71 |
Commercial Real Estate Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | | 425 |
Commercial Real Estate Portfolio Segment [Member] | Maximum [Member] | | |
Loan Origination, Percentage of Appraised Value or Selling Price | 80.00% | |
Interest Rate Maturity Or Re-price | 7 years | |
Loan Amortization Period | 25 years | |
Commercial Real Estate Portfolio Segment [Member] | Minimum [Member] | | |
Interest Rate Maturity Or Re-price | 5 years | |
Construction Portfolio Segment [Member] | | |
Financing Receivable, Recorded Investment, Nonaccrual Status | | |
Allowance for Loan and Lease Losses, Write-offs | 0 | |
Construction Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | | |
Construction Portfolio Segment [Member] | Maximum [Member] | | |
Loan Term | 1 year | |
Consumer Portfolio Segment [Member] | | |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 14 | |
Financing Receivable Nonaccrual, Downgraded from Accruing Status | 14 | |
Allowance for Loan and Lease Losses, Write-offs | 0 | |
Consumer Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | | |
Consumer Portfolio Segment [Member] | Maximum [Member] | | |
Loan Origination, Percentage of Appraised Value or Selling Price | 80.00% | |
Commercial Portfolio Segment [Member] | | |
Financing Receivable, Recorded Investment, Nonaccrual Status | $ 116 | 172 |
Financing Receivable Non-accrual, Returned to Accruing Status | 479 | |
Financing Receivable, Nonaccrual Status, Partial Charge-Offs | 35 | |
Allowance for Loan and Lease Losses, Write-offs | | |
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | | |
Home Equity Portfolio Segment [Member] | | |
Financing Receivable, Recorded Investment, Nonaccrual Status | | 53 |
Financing Receivable Non-accrual, Returned to Accruing Status | 184 | |
Allowance for Loan and Lease Losses, Write-offs | | 42 |
Home Equity Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | | |
Financing Receivable, Modifications, Recorded Investment | | $ 131 |