Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Interim) (Details)

v3.8.0.1
Income Taxes (Interim) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Income taxes          
Gross unrecognized tax benefits $ 17,853   $ 17,853   $ 16,476
Unrecognized tax benefits that would impact effective tax rate, if recognized 17,853   17,853    
Recorded interest and penalties 371 $ 334 1,261 $ 723  
United States          
Income taxes          
Gross unrecognized tax benefits $ 0   $ 0