Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Jun. 30, 2018	Jun. 30, 2019	Dec. 31, 2018
Net Deferred Tax Liabilities related to IPR&D			$ 3,007	$ 3,007
Income tax expense (benefit)		$ (765)
Glemba | IPR&D
Income tax expense (benefit)	$ (800)