Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.20.2
Debt (Details) - USD ($)
3 Months Ended 6 Months Ended
Feb. 28, 2020
May 22, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
May 23, 2017
Debt Instrument [Line Items]              
Interest income / (expense), net     $ (287,000) $ 41,000 $ (593,000) $ 59,000  
New Credit Agreement              
Debt Instrument [Line Items]              
Credit agreement, interest rate floor 1.75%            
Remaining borrowing capacity     5,000,000   5,000,000    
New Credit Agreement | LIBOR              
Debt Instrument [Line Items]              
Credit agreement, basis spread on variable rate 3.75%            
Credit Agreement | New Credit Agreement              
Debt Instrument [Line Items]              
Debt face amount $ 5,000,000            
Outstanding principal     0   0    
Credit Agreement | Western Alliance Bank              
Debt Instrument [Line Items]              
Credit agreement, total facility amount   $ 20,000,000         $ 5,000,000
Credit agreement, basis spread on variable rate   0.50%          
Credit agreement, interest rate floor   6.00%          
Term Loan | New Credit Agreement              
Debt Instrument [Line Items]              
Debt face amount 20,000,000            
Outstanding principal     $ 19,750,000   $ 19,750,000    
Term Loan | New Credit Agreement | Minimum              
Debt Instrument [Line Items]              
Principal payment 250,000            
Term Loan | New Credit Agreement | Maximum              
Debt Instrument [Line Items]              
Principal payment $ 1,250,000