Note 6 - Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Dec. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Goodwill, Ending Balance		$ 836	$ 0
Intangible Assets, Net (Excluding Goodwill), Total			0
Goodwill, Impairment Loss		0
Amortization of Intangible Assets, Total		14
Finite-Lived Intangible Asset, Expected Amortization, Year One		28
Finite-Lived Intangible Asset, Expected Amortization, Year Two		28
Finite-Lived Intangible Asset, Expected Amortization, Year Three		28
Finite-Lived Intangible Asset, Expected Amortization, Year Four		28
Finite-Lived Intangible Asset, Expected Amortization, Year Five		28
Finite-Lived Intangible Asset, Expected Amortization, after Year Five		$ 116
Core Deposits [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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