Note 15 - Employee Benefit Plans - Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Foreign Plan [Member]
2017	$ 9,115
2018	9,334
2019	9,650
2020	10,011
2021	10,257
2022-2026	54,661
UNITED STATES
2017	2,030
2018	2,030
2019	2,030
2020	2,030
2021	2,030
2022-2026	$ 9,990

Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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