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Condensed Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive (loss) income
Beginning balance (in shares) at Dec. 31, 2020   145,425,248      
Beginning balance at Dec. 31, 2020 $ 686,853 $ 15 $ 1,870,256 $ (1,178,476) $ (4,942)
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options (in shares)   13,389      
Exercise of stock options 24   24    
Vesting of restricted stock awards and units (in shares)   1,662,628      
Vesting of performance-based stock awards (in shares)   1,525,681      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares)   (1,268,356)      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (11,233)   (11,233)    
Stock-based compensation expense 5,060   5,060    
Other comprehensive income 6,716       6,716
Net loss (44,687)     (44,687)  
Ending balance (in shares) at Mar. 31, 2021   147,358,590      
Ending balance at Mar. 31, 2021 $ 642,733 $ 15 1,864,107 (1,223,163) 1,774
Beginning balance (in shares) at Dec. 31, 2021 148,895,308 148,895,308      
Beginning balance at Dec. 31, 2021 $ 527,166 $ 15 1,875,234 (1,355,661) 7,578
Increase (Decrease) in Stockholders' Equity          
Exercise of stock options (in shares) 355 355      
Exercise of stock options $ 0        
Vesting of restricted stock awards and units (in shares)   1,610,990      
Vesting of performance-based stock awards (in shares)   175,751      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares)   (570,446)      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (1,812)   (1,812)    
Stock-based compensation expense 4,255   4,255    
Other comprehensive income 14,778       14,778
Net loss $ (69,975)     (69,975)  
Ending balance (in shares) at Mar. 31, 2022 150,111,958 150,111,958      
Ending balance at Mar. 31, 2022 $ 474,412 $ 15 $ 1,877,677 $ (1,425,636) $ 22,356