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Employee Benefit Plans and Stock-based Compensation - Assumptions (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Weighted-average assumptions      
Expected dividend (in hundredths) 0.00% 0.00% 0.00%
Retirement Savings Plan      
Period after which all full time employees are eligible to participate in the savings plan 90 days    
Contributions to the retirement savings plans $ 191,000 $ 208,000 $ 188,000
Maximum      
Retirement Savings Plan      
Maximum percentage of employer matching contribution if employees contribute at least 6% of base pay (in hundredths) 4.00%    
Minimum      
Retirement Savings Plan      
Minimum percentage of employee contribution to get 4% of employer's contribution (in hundredths) 6.00%