Note 10 - Leases and Purchase Commitments - Maturities of Lease Liability (Details) $ in Thousands	Jun. 30, 2020 USD ($)
2021, operating lease liabilities	$ 486
2021, finance lease liabilities	329
2022, operating lease liabilities	2,323
2022, finance lease liabilities	329
2023, operating lease liabilities	2,299
2023, finance lease liabilities	329
2024, operating lease liabilities	2,250
2024, finance lease liabilities	335
2025, operating lease liabilities	1,923
2025, finance lease liabilities	362
Thereafter, operating lease liabilities	1,704
Thereafter, finance lease liabilities	664
Total lease payments, operating lease liabilities	10,985
Total lease payments, finance lease liabilities	2,348
Less: Interest, operating lease liabilities	(1,588)
Less: Interest, finance lease liabilities	(354)
Present Value of Lease Liabilities, operating lease liabilities	9,397
Present Value of Lease Liabilities, finance lease liabilities	$ 1,994