Description of Business -Pro Forma Information (Details) - CJWS - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Revenues	$ 469,180	$ 953,359
Loss from continuing operations	$ (234,260)	$ (103,749)
Loss from continuing operations per share, basic and diluted (in dollars per share)	$ (9,400)	$ (3,970)
Weighted average shares outstanding, basic and diluted (in shares)	24,925	26,141