Annual report pursuant to Section 13 and 15(d)

Debt - Additional Information (Detail)

v3.21.1
Debt - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 03, 2021
Feb. 28, 2020
May 22, 2019
May 23, 2017
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Sep. 20, 2017
Sep. 28, 2016
Debt Instrument [Line Items]                  
Interest expense         $ 1,043,000 $ 107,000 $ 1,120,000    
Amortization of costs/discounts         94,000 $ 6,000 $ 798,000    
Convertible Notes Payable                  
Debt Instrument [Line Items]                  
Debt face amount                 $ 16,000,000
Interest rate                 8.75%
Warrant exercise price (in dollars per share)               $ 1.364 $ 1.364
Warrants exercised (in shares)           3,614,100 484,900    
Warrants outstanding (in shares)           0      
Interest expense         949,000 $ 101,000 $ 322,000    
Line of Credit | Western Alliance Bank                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity     $ 20,000,000 $ 5,000,000          
Debt term     2 years 2 years          
Interest rate at period end     5.50% 5.25%          
Interest rate, floor     6.00% 4.00%          
Fee amount       $ 45,500          
Termination fee       0.50%          
Pledges of stock       65.00%          
Current ratio       65.00%          
Minimum revenue compared to projections       85.00%          
Facility fee, percent of available credit limit     0.20%            
Unused line fee     0.10%            
New Credit Agreement                  
Debt Instrument [Line Items]                  
Interest rate, floor     1.75%            
New Credit Agreement | Line of Credit                  
Debt Instrument [Line Items]                  
Debt face amount   $ 5,000,000              
New Credit Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Debt face amount   20,000,000              
BoA Credit Agreement | Line of Credit | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity $ 100,000,000                
Line of credit, including accordion feature $ 200,000,000                
Amount outstanding         15,000,000        
Remaining borrowing capacity         $ 85,000,000        
Prime | Line of Credit | Western Alliance Bank                  
Debt Instrument [Line Items]                  
Basis spread     0.50% 1.25%          
LIBOR | New Credit Agreement                  
Debt Instrument [Line Items]                  
Basis spread     3.75%            
Minimum | New Credit Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Principal payment amount   250,000              
Minimum | LIBOR | BoA Credit Agreement | Line of Credit | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Basis spread 1.50%                
Maximum | New Credit Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Principal payment amount   $ 1,250,000              
Maximum | LIBOR | BoA Credit Agreement | Line of Credit | Revolving Credit Facility                  
Debt Instrument [Line Items]                  
Basis spread 2.25%