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Stockholders Equity - Summary of Stock Option Activity (Detail) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Number of shares, Beginning Balance 3,601  
Options granted, Shares 418  
Options forfeited, Shares (52)  
Options expired, Shares (411)  
Options exercised, Shares (2)  
Number of shares, Ending Balance 3,554 3,601
Weighted average exercise price, Beginning Balance $ 3.43  
Options granted, Weighted average exercise price 2.42  
Options forfeited, Weighted average exercise price 3.36  
Options expired, Weighted average exercise price 3.66  
Options exercised, Weighted average exercise price 1.66  
Weighted average exercise price, Ending Balance $ 3.28 $ 3.43
Weighted average remaining contractual term, End of the period 7 years 1 month 2 days 6 years 5 months 15 days