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Note 19 - Stock Options (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 24, 2017	Sep. 24, 2007	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Payments								$ 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%	0.14%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate								45.38%	45.38%
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								2.35%	2.35%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate								55.59%	76.85%
Employee Stock Option Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		600,000						0	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)			0					37,500	40,000
Share-Based Payment Arrangement, Expense								$ 0	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)			37,500				37,500		37,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)			$ 4.14				$ 4.14		$ 4.14
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)									11 months 26 days
Director Plan 2007 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)								50,000	200,000
Share-Based Payment Arrangement, Expense								$ 0	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)			50,000				50,000		50,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)						$ 4.14		$ 4.14
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)								11 months 26 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)								0	0
Employee Stock Option Plan 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)						40,500	71,000	40,500	71,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term (Year)								5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)								41,125	0
Share-Based Payment Arrangement, Expense								$ 106	$ 45
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)			149,750			170,500	149,750	170,500	149,750
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)			$ 4.46			$ 4.81	$ 4.46	$ 4.81	$ 4.46
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)								2 years 2 months 26 days	2 years 11 months 26 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%
Employee Stock Option Plan 2017 [Member] \| Minimum [Member]
Stock Issued During Period, Shares, New Issues (in shares)								300,000
Employee Stock Option Plan 2017 [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)								300,000
Stock Issued During Period, Shares, New Issues (in shares)						600,000
Director Plan 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)						100,000	80,000	100,000	80,000
Stock Issued During Period, Shares, New Issues (in shares)				600,000	300,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)								0	0
Share-Based Payment Arrangement, Expense								$ 353	$ 99
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)			320,000			420,000	320,000	420,000	320,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)			$ 4.27			$ 5.10	$ 4.27	$ 5.10	$ 4.27
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)								3 years 1 month 6 days	3 years 5 months 19 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)					5 years
Director Plan 2017 [Member] \| Unvested Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)								0	0