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Net Loss Per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Numerators:      
Net loss $ (63,993) $ (468,383) $ (231,808)
Less: Income attributable to unvested restricted stock awards 0 0 0
Numerator for basic net loss per share (63,993) (468,383) (231,808)
Effect of dilutive securities:      
Unvested restricted stock awards 0 0 0
Numerator for diluted net loss per share $ (63,993) $ (468,383) $ (231,808)
Denominators:      
Weighted average number of common shares outstanding (in shares) 61,314 60,953 60,424
Less: Weighted average number of unvested restricted stock awards outstanding (in shares) (1,021) (1,141) (1,045)
Denominator for basic loss per share (in shares) 60,293 59,812 59,379
Denominator for diluted net loss per share (in shares) 60,293 59,812 59,379
Net loss per share:      
Basic (in dollars per share) $ (1.06) $ (7.83) $ (3.90)
Diluted (in dollars per share) $ (1.06) $ (7.83) $ (3.90)