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Note 8 - Fair Value - Financial Assets At Fair Value on Non-recurring Basis (Details) - Fair Value, Nonrecurring [Member] - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Foreclosed assets	$ 1,005
One-to-Four Family Residential Real Estate [Member]
Foreclosed assets	73
Nonresidential Real Estate Loans [Member]
Foreclosed assets	140
Other Foreclosed Assets [Member]
Foreclosed assets	792
Real Estate Portfolio [Member] | Nonresidential Real Estate [Member]
Impaired loans - nonresidential real estate, fair value	268	$ 268
Fair Value, Inputs, Level 1 [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 1 [Member] | One-to-Four Family Residential Real Estate [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 1 [Member] | Nonresidential Real Estate Loans [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 1 [Member] | Other Foreclosed Assets [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 1 [Member] | Real Estate Portfolio [Member] | Nonresidential Real Estate [Member]
Impaired loans - nonresidential real estate, fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 2 [Member] | One-to-Four Family Residential Real Estate [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 2 [Member] | Nonresidential Real Estate Loans [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 2 [Member] | Other Foreclosed Assets [Member]
Foreclosed assets	0
Fair Value, Inputs, Level 2 [Member] | Real Estate Portfolio [Member] | Nonresidential Real Estate [Member]
Impaired loans - nonresidential real estate, fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Foreclosed assets	1,005
Fair Value, Inputs, Level 3 [Member] | Nonresidential Real Estate [Member]
Foreclosed assets	140
Fair Value, Inputs, Level 3 [Member] | One-to-Four Family Residential Real Estate [Member]
Foreclosed assets	73
Fair Value, Inputs, Level 3 [Member] | Nonresidential Real Estate Loans [Member]
Foreclosed assets	140
Fair Value, Inputs, Level 3 [Member] | Other Foreclosed Assets [Member]
Foreclosed assets	792
Fair Value, Inputs, Level 3 [Member] | Real Estate Portfolio [Member] | Nonresidential Real Estate [Member]
Impaired loans - nonresidential real estate, fair value	$ 268	$ 268

X

- Definition

Represents fair value of foreclosed assets.

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of impaired financing receivable.

+ References

No definition available.

+ Details

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- Details

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