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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, 2021 | Jun. 30, 2021 | Dec. 31, 2020
Loan balance, with no allowance recorded | $ 2,185 | $ 2,185 | $ 2,589
Recorded investment, with no allowance recorded | 1,994 | 1,994 | 2,238
Partial charge-off, with no allowance recorded | 192 | 192 | 363
Average investment in impaired loans, with no allowance recorded | 2,025 | 2,089 | 2,376
Interest income recognized, with no allowance recorded | 15 | 30 | 73
Loan balance, with allowance recorded | 2,465 | 2,465 |
With an allowance recorded, recorded investment | 2,290 | 2,290 | 2,534
Partial charge-off, with allowance recorded | 192 | 192 | 363
Allowance for loan losses | 28 | 28 | 28
Average investment in impaired loans, with allowance recorded | 2,321 | 2,385 | 2,665
Interest income recognized, with related allowance recorded | 15 | 30 | 73
Loan balance, with no allowance recorded | 2,185 | 2,185 | 2,589
Recorded investment, with no allowance recorded | 1,994 | 1,994 | 2,238
Loan balance, with allowance recorded | 2,465 | 2,465 |
Allowance for loan losses |  |  | 28
Loan balance, with allowance recorded |  |  | 2,869
Nonresidential Real Estate Loans [Member] |  |  |
Loan balance, with allowance recorded | 280 | 280 | 280
With an allowance recorded, recorded investment | 296 | 296 | 296
Partial charge-off, with allowance recorded | 0 | 0 | 0
Allowance for loan losses | 28 | 28 |
Average investment in impaired loans, with allowance recorded | 296 | 296 | 289
Interest income recognized, with related allowance recorded | 0 | 0 | 0
Loan balance, with allowance recorded | 280 | 280 | 280
Allowance for loan losses |  |  | 28
Real Estate Portfolio [Member] | One-to-Four Family Residential Real Estate [Member] |  |  |
Loan balance, with no allowance recorded | 1,676 | 1,676 | 2,069
Recorded investment, with no allowance recorded | 1,485 | 1,485 | 1,718
Partial charge-off, with no allowance recorded | 192 | 192 | 363
Average investment in impaired loans, with no allowance recorded | 1,513 | 1,574 | 1,782
Interest income recognized, with no allowance recorded | 7 | 15 | 42
Allowance for loan losses | 0 | 0 | 0
Loan balance, with no allowance recorded | 1,676 | 1,676 | 2,069
Recorded investment, with no allowance recorded | 1,485 | 1,485 | 1,718
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] |  |  |
Allowance for loan losses | 0 | 0 | 0
Real Estate Portfolio [Member] | Multi-family Mortgage [Member] | ILLINOIS |  |  |
Loan balance, with no allowance recorded | 509 | 509 | 520
Recorded investment, with no allowance recorded | 509 | 509 | 520
Partial charge-off, with no allowance recorded | 0 | 0 | 0
Average investment in impaired loans, with no allowance recorded | 512 | 515 | 594
Interest income recognized, with no allowance recorded | 8 | 15 | 31
Loan balance, with no allowance recorded | 509 | 509 | 520
Recorded investment, with no allowance recorded | $ 509 | $ 509 | $ 520

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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=123577603&loc=SL6953423-111524 + Details
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