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Note 17 - Employee Benefits - Target Asset Allocations (Details) | Jun. 30, 2017
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UNITED STATES |
Target asset allocations | 100.00%
UNITED KINGDOM |
Target asset allocations | 100.00%
Equity Securities [Member] | UNITED STATES |
Target asset allocations | 32.00%
Equity Securities [Member] | UNITED KINGDOM |
Target asset allocations | 18.00%
Debt Securities [Member] | UNITED STATES |
Target asset allocations | 33.00%
Debt Securities [Member] | UNITED KINGDOM |
Target asset allocations | 45.00%
Hedge Funds, Global Opportunity [Member] | UNITED STATES |
Target asset allocations | 25.00%
Hedge Funds, Global Opportunity [Member] | UNITED KINGDOM |
Target asset allocations | 32.00%
Other Debt Obligations [Member] | UNITED STATES |
Target asset allocations | 10.00%
Other Debt Obligations [Member] | UNITED KINGDOM |
Target asset allocations | 5.00%

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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5)(i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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