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Note 19 - Business Segments - Revenues as Reported in the Geographic Area (Details) - USD ($) $ in Thousands		12 Months Ended
		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.

X

- 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

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