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Note 4 - Loans Receivable - Loans Individually Evaluated for Impairment By Class (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020 | Dec. 31, 2019
Loan balance, with no allowance recorded | $ 3,840 | $ 3,840 | $ 3,068
Recorded investment, with no allowance recorded | 3,493 | 3,493 | 2,743
Partial charge-off, with no allowance recorded | 353 | 353 | 339
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | 0
Average investment in impaired loans, with no allowance recorded | 3,036 | 2,932 | 3,434
Interest income recognized, with no allowance recorded | 20 | 44 | 90
Nonresidential Real Estate [Member] |  |  |
Loan balance, with no allowance recorded |  |  | 280
Recorded investment, with no allowance recorded |  |  | 288
Partial charge-off, with no allowance recorded |  |  | 0
Allowance for loan losses, individually evaluated for impairment |  |  | 0
Average investment in impaired loans, with no allowance recorded |  |  | 589
Interest income recognized, with no allowance recorded |  |  | 2
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member] |  |  |
Loan balance, with no allowance recorded | 2,113 | 2,113 | 2,168
Recorded investment, with no allowance recorded | 1,768 | 1,768 | 1,835
Partial charge-off, with no allowance recorded | 353 | 353 | 339
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | 0
Average investment in impaired loans, with no allowance recorded | 1,789 | 1,816 | 2,208
Interest income recognized, with no allowance recorded | 11 | 24 | 51
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | 0
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] | ILLINOIS |  |  |
Loan balance, with no allowance recorded | 604 | 604 | 620
Recorded investment, with no allowance recorded | 604 | 604 | 620
Partial charge-off, with no allowance recorded | 0 | 0 | 0
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | 0
Average investment in impaired loans, with no allowance recorded | 609 | 612 | 637
Interest income recognized, with no allowance recorded | 9 | 18 | 37
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member] |  |  |
Loan balance, with no allowance recorded | 280 | 280 |
Recorded investment, with no allowance recorded | 288 | 288 |
Partial charge-off, with no allowance recorded | 0 | 0 |
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | 0
Average investment in impaired loans, with no allowance recorded | 288 | 288 |
Interest income recognized, with no allowance recorded | 0 | 0 |
Finance Leases Portfolio Segment [Member] |  |  |
Allowance for loan losses, individually evaluated for impairment | 0 | 0 | $ 0
Finance Leases Portfolio Segment [Member] | Other [Member] |  |  |
Loan balance, with no allowance recorded | 843 | 843 |
Recorded investment, with no allowance recorded | 833 | 833 |
Partial charge-off, with no allowance recorded | 0 | 0 |
Allowance for loan losses, individually evaluated for impairment | 0 | 0 |
Average investment in impaired loans, with no allowance recorded | 350 | 216 |
Interest income recognized, with no allowance recorded | $ 0 | $ 2 |

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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
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- Definition Amount of investment in impaired financing receivables for which there is no related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
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