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Stock-Based Compensation - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 22, 2022
Feb. 14, 2022
Mar. 31, 2022
Dec. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Total Shares Outstanding     3,203,514 2,413,194
Unrecognized share-based compensation expense, weighted-average recognition period     2 years 11 months 19 days  
Stock Options [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Intrinsic value of options outstanding     $ 0 $ 610
Intrinsic value of options exercisable     0 610
Intrinsic value of options vested and unvested expected to vest     $ 0 $ 610
RSUs [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
RSUs granted     0  
Intrinsic value shares, RSUs outstanding     $ 84  
Intrinsic value amount, RSUs unvested and vested expected to vest     $ 84  
RSUs outstanding     36  
Stock Options and RSUs [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized share-based compensation expense, stock options     $ 6,500,000  
2013 Equity Incentive Plan [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Total stock options and RSUs authorized     2,263,088  
2013 Equity Incentive Plan [Member] | Non-inducement Shares [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Increase in number of shares of common stock authorized for issuance     1,300,000  
Total stock options and RSUs authorized     2,336,409  
Stock options and RSUs issued     1,858,427  
Common stock, shares authorized     667,663  
Total Shares Outstanding     1,603,596  
2013 Equity Incentive Plan [Member] | Inducement Shares [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Increase in number of shares of common stock authorized for issuance 500,000 1,000,000    
Total stock options and RSUs authorized     2,263,088  
Stock options and RSUs issued     1,599,918  
Common stock, shares authorized     513,032  
Total Shares Outstanding     1,599,918  
2013 Equity Incentive Plan [Member] | Non-inducement and Inducement Shares [Member]        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Total stock options and RSUs authorized     4,599,497