Note 14 - Stock Split (Details Textual)		12 Months Ended
Apr. 29, 2016	Dec. 31, 2016
Stockholders' Equity Note, Stock Split, Conversion Ratio		3
Stock Dividend, Percentage	50.00%
Stock Split To [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	3
Stock Split From [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

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