Annual report pursuant to Section 13 and 15(d)

Income Taxes - Deferred Tax Asset Valuation Rolforward (Details)

v3.10.0.1
Income Taxes - Deferred Tax Asset Valuation Rolforward (Details) - Valuation Allowance of Deferred Tax Assets - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Movement in Valuation Allowances and Reserves    
Beginning Balance $ 64,945 $ 38,271
Additions 5,314 34,863
Reductions (21,548) (8,189)
Ending Balance 48,711 $ 64,945
Net change in period $ (16,234)