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Stock-Based Plans - Stock Option Activity (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Jan. 23, 2022
Number of Options      
Beginning balance (in shares) 1,597    
Options granted (in shares) 0    
Option exercised (in shares) (8)    
Options forfeited (in shares) (47)    
Ending balance (in shares) 1,542 1,597  
Vested (in shares) 1,469    
Unvested awards (in shares) 73    
Weighted-Average Exercise Price per Option      
Beginning balance (in usd per share) $ 7.08    
Options granted (in usd per share) 0    
Options exercised (in usd per share) 2.63    
Options forfeited (in usd per share) 14.84    
Ending balance (in usd per share) 6.87 $ 7.08  
Vested (in usd per share) 6.89    
Unvested awards (in usd per share) $ 6.34    
Weighted- Average Remaining Contractual Life (in Years)      
Contractual term 5 years 7 months 6 days 5 years 7 months 6 days  
Vested 5 years 4 months 24 days    
Unvested awards 8 years 4 months 24 days    
Aggregate Intrinsic Value      
Outstanding $ 35 $ 82  
Options exercised 7    
Vested 35    
Unvested awards $ 0    
Share price (in usd per share) $ 3.59   $ 2.84