Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.20.1
Commitments and Contingencies - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 28, 2020
May 22, 2019
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Sep. 28, 2016
Debt Instrument [Line Items]            
Rent expense     $ 1,093,000      
Rental expense (Topic 840)       $ 1,065,000 $ 857,000  
Interest expense     107,000 1,120,000 2,067,000  
Non-cash interest expense     6,000 798,000 1,018,000  
Interest income / (expense)     41,000 (1,120,000) (2,067,000)  
New Credit Agreement            
Debt Instrument [Line Items]            
Interest rate, floor   1.75%        
LIBOR | New Credit Agreement            
Debt Instrument [Line Items]            
Basis spread   3.75%        
Term Loan | New Credit Agreement            
Debt Instrument [Line Items]            
Debt face amount $ 20,000,000          
Convertible Notes Payable            
Debt Instrument [Line Items]            
Debt face amount           $ 16,000,000
Interest expense     $ 101,000 $ 322,000 $ 1,049,000  
Minimum | Term Loan | New Credit Agreement            
Debt Instrument [Line Items]            
Principal payment amount 250,000          
Maximum | Term Loan | New Credit Agreement            
Debt Instrument [Line Items]            
Principal payment amount $ 1,250,000