XML 49 R36.htm IDEA: XBRL DOCUMENT v3.20.1
BORROWINGS - Additional information (Details)
6 Months Ended 12 Months Ended
Mar. 27, 2019
USD ($)
$ / shares
shares
Jun. 30, 2019
Dec. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2020
USD ($)
Mar. 31, 2019
USD ($)
Dec. 28, 2018
USD ($)
$ / shares
shares
Oct. 15, 2018
USD ($)
tranche
Apr. 10, 2018
USD ($)
Feb. 28, 2018
USD ($)
tranche
$ / shares
shares
Debt Instrument [Line Items]                  
Long-term portion of Term Loan     $ 58,374,000 $ 59,125,000          
Percentage of principal 1.00%                
Term Loan                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount             $ 100,000,000.0   $ 100,000,000.0
Debt, number of tranches | tranche             5   5
Long-term portion of Term Loan $ 40,000,000.0                
Debt payment terms, multiplier 7.55%                
Number of shares called by warrant (in shares) | shares                 53,458
Exercise price of warrant (in USD per share) | $ / shares                 $ 9.35
Estimated fair value of warrants                 $ 200,000
Increase (decrease) in equity due to warrants           $ 900,000   $ 200,000  
Fair value of embedded derivative liability       1,800,000       $ 700,000  
Unamortized issuance costs and debt discounts       3,300,000 $ 3,600,000        
Term Loan | Minimum                  
Debt Instrument [Line Items]                  
Debt prepayment fee, percentage 2.00%                
Term Loan | Tranche one                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount                 25,000,000.0
Term Loan | Tranche two                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount             $ 15,000,000.0   $ 25,000,000.0
Number of shares called by warrant (in shares) | shares           53,458      
Exercise price of warrant (in USD per share) | $ / shares           $ 9.35      
New Term Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity of term loan $ 200,000,000.0                
Term of principal and interest payments 30 months                
One time payment of principal $ 2,600,000                
Debt prepayment fee, percentage year two 1.50%                
Debt prepayment fee, percentage year three 1.00%                
Debt prepayment fee, percentage after year three 0.00%                
New Term Loan | Maximum                  
Debt Instrument [Line Items]                  
Extended period for payment of interest only 24 months                
New Term Loan | Tranche one                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount $ 20,000,000.0                
New Term Loan | Tranche two                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount       15,000,000.0          
New Term Loan | Tranche three                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount 75,000,000.0                
New Term Loan | Tranche four                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount $ 50,000,000.0                
New Term Loan | Tranche four | Hercules Capital, Inc. [Member]                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount       5,000,000.0          
New Term Loan | Tranche four | Hercules Technology III, L.P. [Member]                  
Debt Instrument [Line Items]                  
Debt aggregate principal amount       $ 10,000,000.0          
Third Amendment to Term Loan                  
Debt Instrument [Line Items]                  
Number of shares called by warrant (in shares) | shares 16,721   8,361            
Exercise price of warrant (in USD per share) | $ / shares $ 23.92   $ 23.92            
Increase (decrease) in equity due to warrants $ 300,000   $ 300,000            
Floating variable rate 1 | Term Loan                  
Debt Instrument [Line Items]                  
Debt interest rate     8.35%            
Floating variable rate 2 | Term Loan | Prime rate                  
Debt Instrument [Line Items]                  
Debt, basis spread on variable rate   8.35%              
Floating variable rate 2 | New Term Loan | Prime rate                  
Debt Instrument [Line Items]                  
Debt, basis spread on adjusted variable rate 6.00%                
Floating variable rate 3 | Term Loan                  
Debt Instrument [Line Items]                  
Debt interest rate     9.85%            
Time To Liquidity | Third Amendment to Term Loan                  
Debt Instrument [Line Items]                  
Measurement input, time to liquidity 7 years   7 years            
Volatility | Third Amendment to Term Loan                  
Debt Instrument [Line Items]                  
Warrants measurement input 0.750   0.727            
Risk-free interest rate | Third Amendment to Term Loan                  
Debt Instrument [Line Items]                  
Warrants measurement input 0.023   0.018            
Discount Rate                  
Debt Instrument [Line Items]                  
Derivative liability, measurement input       0.168          
Measurement input, probability of occurrence of certain events                  
Debt Instrument [Line Items]                  
Derivative liability, measurement input       0.200