Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	4 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue		$ 351,591	$ 370,785
Revenue generated by operating leases acquired in acquisition	$ 900
Service revenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue			$ 40,100