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Note 6 - Weighted -average Interest Rate (Details)	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Weighted-average interest rate	2.00%	4.80%	5.50%

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