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Note 17 - Employee Benefits - Fair Values of Pension Plans (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Jun. 30, 2015
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Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | $ 511 | $ 451
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 6,413 | 3,600
Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
Cash and Cash Equivalents [Member] |  |
Fair value of pension plan assets | 6,924 | 4,051
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 17,227 | 17,716
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 74,309 | 84,009
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
Equity Securities [Member] |  |
Fair value of pension plan assets | 91,536 | 101,725
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets |  |
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 15,032 | 14,469
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
US Government Agencies Debt Securities [Member] |  |
Fair value of pension plan assets | 15,032 | 14,469
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 6,328 | 6,238
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 101,192 | 106,059
Corporate Bonds and Other Fixed Income Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
Corporate Bonds and Other Fixed Income Securities [Member] |  |
Fair value of pension plan assets | 107,520 | 112,297
Other Debt Obligations [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets |  |
Other Debt Obligations [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 11,845 | 9,534
Other Debt Obligations [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
Other Debt Obligations [Member] |  |
Fair value of pension plan assets | 11,845 | 9,534
Fair Value, Inputs, Level 1 [Member] |  |
Fair value of pension plan assets | 24,066 | 24,405
Fair Value, Inputs, Level 2 [Member] |  |
Fair value of pension plan assets | 208,791 | 217,671
Fair Value, Inputs, Level 3 [Member] |  |
Fair value of pension plan assets |  |
Fair value of pension plan assets | $ 232,857 | $ 242,076

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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=64937038&loc=d3e12355-114930 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6749337 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Plan Assets -URI http://asc.fasb.org/extlink&oid=6520858 + Details
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