Note 12 - Effect of 1% Change in Assumed Health Care Cost Trend Rates (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Effect on total of service and interest cost			$ 35
Effect on postretirement benefit obligation	2	4	7
Effect on total of service and interest cost			(30)
Effect on postretirement benefit obligation	$ (2)	$ (4)	$ (7)

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (m)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Amount of effect of a one-percentage-point decrease in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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- Definition

The effect of a one-percentage-point increase in the assumed health care cost trend rates on the accumulated postretirement benefit obligation for health care benefits.

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The effect of a one-percentage-point increase in the assumed health care cost trend rates on the aggregate of the service and interest cost components of net periodic postretirement health care benefit costs.

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