Note 17 - Employee Benefit Plans - Plan Asset Assumptions (Details)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Rate of compensation increase	3.20%	3.60%	3.70%
Rate of compensation increase	3.60%	3.70%	3.30%
Minimum [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	0.24%	0.38%	1.90%
Discount rate	0.38%	0.43%	1.50%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	2.45%	2.55%	3.75%
Maximum [Member]
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate	3.70%	4.40%	4.00%
Discount rate	4.40%	4.00%	4.00%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	7.00%	7.00%	7.10%