14. Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net (loss) income	$ (49,168)	$ 45,203	$ (36,618)	$ 337,323
Weighted-average common shares outstanding	106,596	106,320	106,532	106,241
Effect of restricted stock and performance units	0	579	0	638
Weighted-average shares used in computing diluted net (loss) income per share	106,596	106,899	106,532	106,879
Net (loss) income per share, basic	$ (0.46)	$ 0.43	$ (0.34)	$ 3.18
Net (loss) income per share, diluted	$ (0.46)	$ 0.42	$ (0.34)	$ 3.16
Anti-dilutive shares	626	8	523	3