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Stock-Based Payments - Weighted-Average Assumptions to Estimate Fair Value of Stock Options (Details) - $ / shares
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Stock Option    
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Weighted-average grant date fair value of options granted (in dollars per share) $ 1.03 $ 7.37