Note 20 - Stock Options (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended	6 Months Ended		12 Months Ended
	Oct. 31, 2023	Dec. 31, 2021	Sep. 30, 2020	Sep. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Sep. 24, 2017
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Payments					$ 0
Employee Stock Option Plan 2017 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized		600,000							300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized		300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)		10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)		5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross					48,000	25,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)					63,875	5,000
Share-Based Payment Arrangement, Expense					$ 90	$ 54
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number					88,250	134,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price					$ 5.59	$ 4.78
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term					3 years 29 days	1 year 8 months 23 days
Employee Stock Option Plan 2017 [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage		25.00%
Director Plan 2017 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized	900,000		600,000						300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized			300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)	5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross					0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)					0	0		0
Share-Based Payment Arrangement, Expense					$ 0	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number					420,000	420,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price					$ 4.91	$ 5.1
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term					2 years 4 months 28 days	2 years 4 months 2 days
Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)					2 years 6 months
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				0.11%	0.11%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate					52.20%		47.30%
Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year)					3 years 3 months
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate				4.17%	4.59%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate					73.85%		73.85%