Subsequent Events (Details) - USD ($) $ in Millions				12 Months Ended
	Mar. 04, 2020	Mar. 03, 2020	Mar. 01, 2020	Dec. 31, 2019
Subsequent Event
Final fee payment				$ 1.9
Subsequent event
Subsequent Event
Additional compliance period	180 days	180 days
Final fee payment			$ 1.9
Final payment fee percentage			6.60%