Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 3)

v3.6.0.2
Income Taxes (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]      
Balance at beginning of period $ 36,452 $ 8,524 $ 8,504
Additions based on tax positions related to the current year 70 154 40
Additions for tax positions of prior years 2,408 28,224 0
Reductions for tax positions of prior years (160) (450) (20)
Balance at end of period $ 38,770 $ 36,452 $ 8,524