Acquisitions - Business Combination - Summary of Supplemental Proforma Information (Details) - ILX and Castex - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Revenue	$ 634,921	$ 1,246,391
Net income (loss)	$ (449,988)	$ 148,091
Basic net income (loss) per common share	$ (6.48)	$ 2.27
Diluted net income (loss) per common share	$ (6.48)	$ 2.26