Note 9 - Share-based Compensation and Employee Benefit Plan - Restricted Shares (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jun. 30, 2022
Unvested (in shares)	29,984	23,187	29,984	23,187
Unvested, weighted average grant date fair value (in dollars per share)	$ 7.69	$ 7.24	$ 7.69	$ 7.24
Unvested at beginning of period (in shares)	35,270	21,468	18,498
Unvested at beginning of period, weighted average grant date fair value (in dollars per share)	$ 8.12	$ 6.48	$ 7.29
Granted (in shares)		2,496	20,476
Granted, weighted average grant date fair value (in dollars per share)		$ 17.25	$ 10.48
Vested (in shares)	(700)	(777)	(4,404)
Vested, weighted average grant date fair value (in dollars per share)	$ 17.85	$ 18.55	$ 17.21
Forfeited (in shares)	(4,586)		(4,586)
Forfeited, weighted average grant date fair value (in dollars per share)	$ 9.39		$ 9.39
Unvested at end of period (in shares)	29,984	23,187	29,984
Unvested at end of period, weighted average grant date fair value (in dollars per share)	$ 7.69	$ 7.24	$ 7.69

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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