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Stockholders' Equity - Summary of MSU Performance (Detail) - Market Performance Based Restricted Stock Units - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2023
Number of Shares  
Nonvested beginning balance (shares) 144,000
Granted (shares) 82,000
Vested and released (shares) (24,578)
Forfeited (shares) (43,000)
Nonvested ending balance (shares) 158,000
Nonvested, beginning balance (usd per share) $ 725.73
Weighted average grant date fair value of awards granted (usd per share) 629.53
Vested and released (usd per share) 392.67
Forfeited (usd per share) 423.87
Nonvested, ending balance (usd per share) $ 811.06
Weighted Average Remaining Contractual Term  
Unvested 1 year 4 months 24 days
Aggregate Intrinsic Value  
Unvested $ 43,197