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Stockholders' Equity - Activity under Plans (Detail) - 2020 Equity Incentive Plan [Member] - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Number of Shares, Outstanding, beginning of period 499,442  
Number of Shares, Forfeited (31,417)  
Number of Shares, Expired (2,200)  
Number of Shares, Outstanding, end of period 465,825 499,442
Number of Shares, Vested and expected to vest 465,457 498,921
Number of Shares, Options exercisable 465,603 495,428
Number of Shares, Outstanding, Weighted Average Exercise Price, beginning of period $ 101.82  
Number of Shares, Forfeited, Weighted Average Exercise Price 90.4  
Number of Shares, Expired, Weighted Average Exercise Price 36  
Number of Shares, Outstanding, Weighted Average Exercise Price, end of period 102.9 $ 101.82
Number of Shares,Vested and expected to vest, Weighted Average Exercise Price, end of period 102.89 101.80
Number of Shares, Options exercisable, Weighted Average Exercise Price, end of period $ 102.9 $ 101.59
Number of Shares, Outstanding, Weighted Average Remaining Contractual Term (years) 4 years 2 months 12 days 4 years 7 months 6 days
Number of Shares, Vested and expected to vest, Weighted Average Remaining Contractual Term (years) 4 years 2 months 12 days 4 years 7 months 6 days
Number of Shares, Options exercisable, Weighted Average Remaining Contractual Term (years) 4 years 2 months 12 days 4 years 7 months 6 days