Income Tax (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended		12 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Unusual or Infrequent Item, or Both [Line Items]
Net tax expense (benefit), COVID-19	$ 1,755		$ (630)	$ (5,614)	$ 4,258	$ (1,594)
Natural Disasters and Other Casualty Events, COVID-19
Unusual or Infrequent Item, or Both [Line Items]
Net tax expense (benefit), COVID-19		$ (11,269)