Note 8 - Debt (Details Textual) $ in Millions	9 Months Ended	12 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Apr. 01, 2019 USD ($)
Line of Credit Facility, Remaining Borrowing Capacity	$ 253.4	$ 253.4
Extraordinary and Certain Other Defined Items Excluded from Adjusted EBIT		$ 20.0	$ 7.5
Extraordinary and Certain Other Defined Items Excluded from Adjusted EBIT, Percentage of EBITDA		10.00%
Interest Coverage Ratio, Actual	7.73	7.73
Leverage Ratio, Requirement, Maximum Under Certain Circumstances in Connection Material Acquisition		4
Leverage Ratio, Actual	1.28	1.28
Long-term Line of Credit, Total	$ 198.8	$ 198.8
Line of Credit Facility, Interest Rate at Period End	3.88%	3.88%
Disposal Group, Including Discontinued Operation, Consideration
Interest Rate Swap [Member]
Derivative, Notional Amount	$ 85.0	$ 85.0
Derivative, Average Fixed Interest Rate	2.11%	2.11%
Cooking Solutions Group [Member] | Discontinued Operations [Member]
Disposal Group, Including Discontinued Operation, Consideration				$ 106.9
Minimum [Member]
Interest Coverage Ratio, Requirement		2.75
Maximum [Member]
Leverage Ratio, Requirement		3.5
Amended and Restated Credit Agreement [Member]
Debt Instrument, Term	5 years
Line of Credit Facility, Maximum Borrowing Capacity	$ 500.0	$ 500.0
Line Of Credit, Accordion Feature	250.0	250.0
Swing Line Loan [Member]
Line of Credit Facility, Maximum Borrowing Capacity	10.0	10.0
Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	35.0	35.0
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	400.0	400.0
Standby Letters of Credit [Member]
Long-term Line of Credit, Total	$ 7.6	$ 7.6	$ 7.9