Annual report pursuant to Section 13 and 15(d)

Note 12 - Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Detail)

v3.6.0.2
Note 12 - Stock-Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - Restricted Stock [Member] - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of Shares, Unvested Beginning Balance 1,025,999 2,631,987
Number of Shares, Granted 572,154 299,828
Number of Shares, Vested (843,643) (1,805,816)
Number of Shares, Cancelled (260,000) (100,000)
Number of Shares, Forfeited (116,085) 0
Number of Shares, Unvested Ending Balance 378,425 1,025,999
Weighted-Average Grant Date Fair Value, Unvested Beginning Balance $ 12.34 $ 11.67
Weighted-Average Grant Date Fair Value, Granted 2.39 4.25
Weighted-Average Grant Date Fair Value, Vested 9.94 10.54
Weighted-Average Grant Date Fair Value, Cancelled 13.00 4.29
Weighted-Average Grant Date Fair Value, Forfeited 8.65 0
Weighted-Average Grant Date Fair Value, Unvested Ending Balance $ 3.45 $ 12.34