Earnings Per Share - Computation of Basic and Dilutive Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Reverse capitalization		$ 172,269
Potentially dilutive shares excluded in aggregate (in shares)	27,800,000		27,300,000
Net Income (Loss)
Basic earnings (loss) per share	$ 15,173	(18,010)	$ (13,946)	$ (30,157)
Dilutive common share equivalents	0	0	0	0
Diluted earnings (loss) per share	$ 15,173	$ (18,010)	$ (13,946)	$ (30,157)
Weighted Average Shares
Weighted-average-common shares outstanding, basic (in shares)	49,033,903	39,909,481	49,033,903	27,743,586
Dilutive common share equivalents (in shares)	273,908	0	0	0
Weighted-average-common shares outstanding, basic (in shares)	49,307,811	39,909,481	49,033,903	27,743,586
Per Share Amount
Basic earnings per share (USD per share)	$ 0.31	$ (0.45)	$ (0.28)	$ (1.09)
Diluted earnings per share (USD per share)	$ 0.31	$ (0.45)	$ (0.28)	$ (1.09)
Additional Paid-in Capital
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Reverse capitalization		$ 172,266			$ 172,300