Note 11 - Legal Proceedings (Details Textual) - USD ($) $ in Thousands	Jul. 26, 2021	Jun. 30, 2021
Settlement Agreement [Member] | Subsequent Event [Member]
Litigation Settlement, Amount Awarded to Other Party	$ 1,300
Minimum [Member]
Potential Exposure Per Call		$ 500
Maximum [Member]
Potential Exposure Per Call		1,500
Other Accrued Liabilities [Member]
Loss Contingency Accrual, Ending Balance		129
Other Long Term Liabilities [Member]
Loss Contingency Accrual, Ending Balance		711
Other Current Assets [Member]
Insurance Settlements Receivable		129
Other Assets [Member]
Insurance Settlements Receivable		$ 711