Note 11 - Leases and Purchase Commitments - Operating Lease Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating lease cost	$ 2,428	$ 2,308
Amortization of right of use assets	291	48
Interest on lease liabilities	91	16
Variable lease cost	10	6
Sublease income	(43)	0
Total lease cost	2,777	2,378
Fixed payments - operating cash flows	2,412	2,296
Liability reduction - operating cash flows	1,983	1,810
Interest - operating cash flows	91	16
Repayments of principal portion - financing cash flows	239	39
Total operating right-of-use assets	11,579	8,663
Long-term operating lease liability	10,890	9,021
Total operating lease liabilities	$ 12,314	$ 9,397
Weighted Average remaining Lease Term (in years) (Year)	3 years 11 months 4 days	4 years 7 months 2 days
Weighted Average Discount Rate	4.81%	4.85%
Finance leases, right of use assets	$ 2,033	$ 2,033
Accumulated depreciation	(339)	(48)
Total finance lease assets, net	1,724	1,985
Accrued expenses (Current liabilities)	263	239
Long-term finance lease liability	1,521	1,755
Total finance lease liabilities	$ 1,784	$ 1,994
Weighted Average remaining Lease Term (in years) (Year)	5 years 9 months 10 days	6 years 9 months 29 days
Weighted Average Discount Rate	4.86%	4.86%
Accrued Expenses [Member]
Accrued expenses (Current liabilities)	$ 1,424	$ 376
Buildings Under Finance Leases [Member]
Finance leases, right of use assets	2,033	2,033
Equipment Under Finance Leases [Member]
Finance leases, right of use assets	$ 30	$ 0