Summary of Significant Accounting Policies Intangible asset (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Amortization Expense, Year Two		$ 1,766
Finite-Lived Intangible Assets, Amortization Expense, Year Three		1,766
Finite-Lived Intangible Assets, Amortization Expense, Year Four		1,766
Finite-Lived Intangible Assets, Amortization Expense, Year Four		1,766
Finite-Lived Intangible Assets, Amortization Expense, Year Five		1,766
Finite-Lived Intangible Assets, Amortization Expense, after Year Five		10,886
Finite-Lived Intangible Assets, Net		$ 19,716
XERMELO Intangible Assets Finite Lived	$ 24,700