XML 47 R36.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 8 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Effective Income Tax Rate Reconciliation, Percent 2.50% 204.30% 19.70% 20.20%  
Income Tax Expense (Benefit) $ (41) $ (2,781) $ (1,607) $ (3,437)  
Unrecognized Tax Benefits $ 4,400   4,400   $ 4,900
Accounting Standards Update 2016-09 [Member]          
Income Tax Expense (Benefit)     $ 800