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Stock-Based Compensation Narrative (Details)
6 Months Ended
Jun. 30, 2022
shares
Employee Equity Plan [Member]  
Statement [Line Items]  
Awards vesting period (in years) 3 years
Number of equity awards that may be awarded (in shares) 5,806,000
Shares reserved for future grants under the stock option and compensation plan 5,100,000
Directors' Plan [Member]  
Statement [Line Items]  
Awards vesting period (in years) 1 year
Shares reserved for future grants under the stock option and compensation plan 51,000