Annual report pursuant to Section 13 and 15(d)

Income Taxes - Valuation Allowance (Details)

v3.10.0.1
Income Taxes - Valuation Allowance (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Increase in valuation allowance $ 19.5 $ 8.0