Note 12 - Income Taxes - Unrecognized Tax Benefits Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance	$ 12,093	$ 16,406	$ 14,922
Increase for tax position of prior year	243		584
Increase for tax position of current year	2,095	1,964	1,760
Decrease due to lapse of statue of limitation		(669)	(860)
Balance	$ 14,431	12,093	$ 16,406
Decrease related to settlement with tax authorities		(4,162)
Decrease for tax position of prior year		$ (1,446)

Amount of unrecognized tax benefits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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