Annual report pursuant to Section 13 and 15(d)

Income Taxes - Change in Unrecognized Tax Position (Details)

v3.10.0.1
Income Taxes - Change in Unrecognized Tax Position (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Balance at beginning of period $ 11,431 $ 16,128
Increases related to prior year tax positions 0 68
Decreases related to prior year tax positions (1,538) (5,508)
Increases related to current year tax positions 282 743
Balance at end of period $ 10,175 $ 11,431