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Note 9 - Share-based Compensation and Employee Benefit Plan (Details Textual) - USD ($)	3 Months Ended		6 Months Ended		30 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2020
Labor and Related Expense	$ 3,763,000	$ 2,447,000	$ 7,109,000	$ 4,663,000
Payments of Ordinary Dividends, Common Stock					$ 0
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			6.00%
Defined Contribution Plan, Cost	67,000	63,000	$ 141,000	111,000
Restricted Stock [Member]
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount	$ 205,000		$ 205,000		$ 205,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			3 years 21 days
2012 Stock Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)						3,000,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)	2,837,113		2,837,113		2,837,113
Share-Based Payment Arrangement, Expense	$ 20,000	46,000	$ 41,000	80,000
2012 Stock Plan [Member] | Share-Based Payment Arrangement, Employee [Member]
Share-Based Payment Arrangement, Expense	8,000	25,000	16,000	40,000
2012 Stock Plan [Member] | Share-Based Payment Arrangement, Nonemployee [Member]
Share-Based Payment Arrangement, Expense	12,000	21,000	25,000	40,000
Labor and Related Expense	$ 37,000	$ 90,000	$ 100,000	$ 184,000
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			3 years
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			4 years
2012 Stock Plan [Member] | Restricted Stock [Member] | Share-Based Payment Arrangement, Tranche Three [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			5 years

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ 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 (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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+ References

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