Note 20 - Stock Options (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 31, 2023	Dec. 31, 2021	Sep. 30, 2020	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Jun. 30, 2023	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						122,500	65,000
Exercise of stock option (in shares)						64,625	5,000
Share-Based Payment Arrangement, Expense				$ 118	$ 70	$ 208	$ 124
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number				136,250	134,625	136,250	134,625
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price				$ 5.57	$ 4.49	$ 5.57	$ 4.49
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term						3 years 1 month 13 days	2 years 6 months 7 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						100,000	100,000
Exercise of stock option (in shares)						49,000	0
Share-Based Payment Arrangement, Expense				$ 220	$ 213	$ 220	$ 213
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number				471,000	440,000	471,000	440,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price				$ 5.08	$ 4.8	$ 5.08	$ 4.8
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term						2 years 10 months 13 days	2 years 8 months 4 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)				0	0	0	0
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						53.80%		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						4.59%		4.17%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate						73.85%		73.85%