Annual report pursuant to Section 13 and 15(d)

Capital Stock Transactions - Additional Information (Detail)

v3.21.1
Capital Stock Transactions - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Class Of Stock [Line Items]      
Series A convertible preferred stock, shares authorized 2,000,000 2,000,000  
Series A convertible preferred stock, par value (in dollars per share) $ 0.0001 $ 0.0001  
Series A convertible preferred stock, shares issued 100,000 100,000  
Total unrecognized stock base compensation expense $ 9,612 $ 4,787 $ 2,639
Stock Option      
Class Of Stock [Line Items]      
Options exercised (in shares) 2,506,383 2,279,747  
Total unrecognized stock base compensation expense, period for recognition 2 years 2 months 12 days 2 years 3 months 18 days 1 year 10 months 24 days
Warrant liability      
Class Of Stock [Line Items]      
Options exercised (in shares) 0 3,283,090  
Restricted Stock      
Class Of Stock [Line Items]      
Shares issued for service, vesting period 1 year    
Restricted Stock | Minimum      
Class Of Stock [Line Items]      
Shares issued for service, vesting period 3 months    
Restricted Stock | Maximum      
Class Of Stock [Line Items]      
Shares issued for service, vesting period 2 years    
Time Based Restricted Stock Awards      
Class Of Stock [Line Items]      
Number of shares granted (in shares) 45,110 75,493  
Compensation expense $ 558 $ 424 $ 380
Non Vested Restricted Stock      
Class Of Stock [Line Items]      
Number of shares granted (in shares) 45,110 75,494  
Number of restricted shares, unvested (in shares) 22,555 37,746 153,328
Number of shares vested (in shares) 60,301 191,076  
Total unrecognized stock base compensation expense $ 209 $ 140  
Total unrecognized stock base compensation expense, period for recognition 4 months 2 days 4 months 2 days  
RSU Agreement      
Class Of Stock [Line Items]      
Number of shares granted (in shares) 109,034 109,416 232,558
Number of shares vested (in shares) 140,022    
Convertible Preferred Stock      
Class Of Stock [Line Items]      
Series A convertible preferred stock, shares authorized 2,000,000    
Series A convertible preferred stock, par value (in dollars per share) $ 0.0001    
Series A convertible preferred stock, shares issued 100,000    
Convertible into (in shares) 20,000    
Liquidation preference, per shares (in dollars per share) $ 10