Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Summary of Cash and Cash Equivalents (Detail)

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Fair Value Measurements - Summary of Cash and Cash Equivalents (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Cash equivalents, amortized cost and estimated fair value $ 41,859 $ 35,380
Restricted cash, amortized cost and estimated fair value 50 50
Money market securities [Member]    
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]    
Cash equivalents, amortized cost and estimated fair value 41,859 35,380
Restricted cash, amortized cost and estimated fair value $ 50 $ 50