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Note 19 - Business Segments - Revenues as Reported in the Geographic Area (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues | [1] | $ 692,812 | $ 662,591 | $ 594,644
UNITED STATES |  |  |  |
Revenues | [1] | 301,132 | 307,025 | 286,509
INDONESIA |  |  |  |
Revenues | [1] | 28,968 | 100,856 | 93,191
KENYA |  |  |  |
Revenues | [1] | 110,243 | 109,270 | 86,545
TURKEY |  |  |  |
Revenues | [1] | 125,166 | 46,270 | 57,356
CHILE |  |  |  |
Revenues | [1] | 8,895 | 58,032 | 34,478
GUATEMALA |  |  |  |
Revenues | [1] | 27,991 | 30,086 | 27,897
NEW ZEALAND |  |  |  |
Revenues | [1] | 33,395 |  |
Other Foreign Countries [Member] |  |  |  |
Revenues | [1] | $ 57,022 | $ 11,052 | $ 8,668
[1] | Revenues as reported in the geographic area in which they originate.

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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