Note 7 - Investments (Details Textual) - USD ($) $ in Millions	Mar. 29, 2020	Jun. 30, 2019
Cost Method Investments	$ 2.8	$ 1.6

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

No definition available.

Name:	us-gaap_CostMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant