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Note 6 - Borrowings - Weighted-average Interest Rate (Details)	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Weighted-average interest rate	3.30%	2.40%	2.00%

X

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant