Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Stockholders' Equity - Schedule of Stockholders Equity (Detail)

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Note 9 - Stockholders' Equity - Schedule of Stockholders Equity (Detail) - Common Stock - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Class of Stock [Line Items]    
Stock issued to employees, executives and directors, Quantity 350,000 145,245
Total, Quantity 350,000 145,245
Stock issued to employees, executives and directors, Valuation $ 686 $ 289
Total, Valuation $ 686 $ 289
Minimum [Member]    
Class of Stock [Line Items]    
Stock issued to employees, executives and directors, Range of Value per Share $ 1.96 $ 1.89
Total, Range of Value per Share 1.96 1.89
Maximum [Member]    
Class of Stock [Line Items]    
Stock issued to employees, executives and directors, Range of Value per Share 1.96 2.21
Total, Range of Value per Share $ 1.96 $ 2.21