Note 16 - Income Taxes (Details Textual) - USD ($) $ in Millions	3 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Income Tax Benefit Cares Act	$ 0.4
Deferred Tax Assets, Property, Plant and Equipment		$ 0.9
Sale of Manufacturing Facility in North Canton, Ohio [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total		$ 4.8

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration