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Note 6 - Borrowings - Weighted-average Interest Rate (Details) | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
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Weighted-average interest rate | 2.40% | 2.00% | 4.80%

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- 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