Annual report pursuant to Section 13 and 15(d)

Debt - Additional Information (Detail)

v3.20.1
Debt - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 28, 2020
May 22, 2019
May 23, 2017
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Sep. 20, 2017
Sep. 30, 2016
Sep. 28, 2016
Debt Instrument [Line Items]                  
Warrant exercise price (in dollars per share)               $ 1.364  
Interest expense       $ 107,000 $ 1,120,000 $ 2,067,000      
Amortization of costs/discounts       $ 6,000 $ 798,000 1,018,000      
Convertible Notes Payable                  
Debt Instrument [Line Items]                  
Debt face amount                 $ 16,000,000
Interest rate                 8.75%
Debt issuance costs           234,000     $ 1,700,000
Number of securities called by each warrant (in shares)       256.60          
Number of securities called by warrant (in shares)       4,105,600         250,000
Warrant exercise price (in dollars per share)             $ 1.364    
Warrants exercised (in shares)       3,614,100 484,900        
Warrants outstanding (in shares)       0          
Interest expense       $ 101,000 $ 322,000 $ 1,049,000      
Line of Credit                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity     $ 5,000,000            
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%              
Amount outstanding       20,000,000          
Remaining borrowing capacity       $ 5,000,000          
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                
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                
Maximum | New Credit Agreement | Term Loan                  
Debt Instrument [Line Items]                  
Principal payment amount $ 1,250,000