Note 19 - Stock Options (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		2 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Sep. 30, 2020	Mar. 01, 2022	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2023	Mar. 31, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020	Sep. 24, 2017	Jun. 30, 2007
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 (in shares)	600,000											300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)	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 (in shares)				40,000	40,500		65,000	40,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)							5,000	41,125
Share-Based Payment Arrangement, Expense				$ 70	$ 84	$ 124		$ 106
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)			170,500	134,625		134,625	134,625
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)			$ 4.81	$ 4.49		$ 4.49	$ 4.49
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 6 months 7 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				216,375	266,375	216,375	216,375	266,375	236,375	267,000
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 2007 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)												0	600,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)							0	0
Share-Based Payment Arrangement, Expense							$ 0	$ 0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				0	0	0	0	0	0	37,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)				0		0	0
Director Plan 2017 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)		600,000										300,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)		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 (in shares)				100,000	100,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)							0	0
Share-Based Payment Arrangement, Expense				$ 213	$ 353		$ 213	$ 353
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in shares)				440,000	420,000	440,000	440,000	420,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)				$ 4.80	$ 5.10	$ 4.80	$ 4.80	$ 5.10
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term (Year)				2 years 8 months 4 days	3 years 1 month 6 days
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)				440,000	420,000	440,000	440,000	420,000		420,000	320,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Number of Shares (in shares)				0	0	0	0	0
Director Plan 2007 [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)												0	500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)							0	50,000
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)				0	0	0	0	0
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)					0			0		50,000
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				47.30%	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				4.17%	2.35%
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate				73.85%	55.59%