XML 56 R43.htm IDEA: XBRL DOCUMENT v3.21.2
Debt - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jul. 19, 2021
Dec. 31, 2020
Nov. 30, 2020
Jan. 31, 2019
Debt Instrument [Line Items]                  
Long-term Debt   $ 35,000,000   $ 35,000,000          
IPO                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock           659,028      
Proceeds from issuance of common stock       60,000,000.0          
2019 Warrants                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock                 59,028
Fair value of warrants       $ 200,000          
2019 Warrants | Common Stock                  
Debt Instrument [Line Items]                  
Share of common stock issued upon warrant exercised 51,846                
2020 Warrants                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock               600,000  
Warrant term [1]           14 days      
2020 Warrants | Common Stock                  
Debt Instrument [Line Items]                  
Share of common stock issued upon warrant exercised 431,708                
2020 Warrants | Minimum                  
Debt Instrument [Line Items]                  
Warrant term             6 months 29 days    
2020 Warrants | Maximum                  
Debt Instrument [Line Items]                  
Warrant term             2 years 6 months 29 days    
Series F Redeemable Convertible Preferred Stock | 2020 Warrants                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock               300,000  
Warrant term               10 years  
Class of warrant exercise price               $ 21.88  
Senior Secured 2019 Term Loan                  
Debt Instrument [Line Items]                  
Debt instrument, term       4 years          
Debt instrument payment terms       The 2019 Term Loan originally required 18 monthly interest-only payments, which began on January 31, 2019, followed by 30 equal monthly installments of principal, plus interest. The interest-only period was extended by an additional six months upon achievement of the Tranche Three Milestone.          
Debt instrument, frequency of periodic payment       interest-only payments          
Debt instrument interest payment term       18 months          
Debt instrument principal and interest payment term       30 months          
Debt instrument interest payment extended term       6 months          
Debt instrument, effective interest rate   14.52%   14.52%          
Interest expense, debt   $ 0.0 $ 500,000 $ 0.0 $ 1,600,000        
Debt issuance costs   1,500,000   $ 1,500,000          
Debt discount amortized term       4 years          
Percentage of prepayment premium year one       3.00%          
Percentage of prepayment premium year two       2.00%          
Percentage of prepayment premium year three       1.00%          
Percentage of final payment fee       5.00%          
Debt Instrument, Covenant Description       The Company was subject to financial covenants related to minimum trailing revenue targets that began on January 1, 2019, and were tested on a monthly basis. Upon funding of only the Tranche One Loans, the Company had to achieve minimum net revenue of $7 million over a trailing 12-month period increasing to a maximum net revenue covenant of $35 million for the trailing 12-month period ending December 31, 2022, and thereafter. Upon funding of both the Tranche One Loans and Tranche Two Loans, the Company had to achieve minimum net revenue of $7 million over a trailing 12-month period increasing to a maximum net revenue covenant of $37.3 million for the 12-month period ending December 31, 2022, and thereafter. If Tranche Three Loans had been funded regardless of whether Tranche Two Loans had been funded, the Company would have been required to achieve minimum net revenue of $15 million over a trailing 12-month period increasing to a maximum net revenue covenant of $46.7 million for the 12-month period ending December 31, 2022, and thereafter.          
Senior Secured 2019 Term Loan | London Interbank Offered Rate (LIBOR)                  
Debt Instrument [Line Items]                  
Debt instrument, variable rate       6.75%          
Senior Secured 2019 Term Loan | Tranche One Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 $ 12,000,000.0
Debt instrument covenant minimum revenue   7,000,000   $ 7,000,000          
Debt instrument covenant maximum revenue   35,000,000   35,000,000          
Senior Secured 2019 Term Loan | Tranche Two Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 2,000,000.0
Senior Secured 2019 Term Loan | Tranche Three Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 6,000,000.0
Debt instrument covenant minimum revenue   15,000,000   15,000,000          
Debt instrument covenant maximum revenue   $ 46,700,000   $ 46,700,000          
Senior Secured 2019 Term Loan | Tranche Three Loans | Series C Redeemable Convertible Preferred Stock                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock   12,649   12,649          
Senior Secured 2019 Term Loan | Tranche One and Two Loans                  
Debt Instrument [Line Items]                  
Long-term Debt   $ 14,000,000.0   $ 14,000,000.0          
Debt instrument covenant minimum revenue   7,000,000   7,000,000          
Debt instrument covenant maximum revenue   $ 37,300,000   $ 37,300,000          
Senior Secured 2019 Term Loan | Tranche One and Two Loans | Series C Redeemable Convertible Preferred Stock                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock   29,514   29,514          
Warrant term   10 years   10 years          
Class of warrant exercise price   $ 9.49   $ 9.49          
Senior Secured 2020 Term Loan                  
Debt Instrument [Line Items]                  
Debt instrument, term       5 years          
Debt instrument payment terms       The 2020 Term Loan requires 24 monthly interest-only payments, which began on December 1, 2020, followed by 36 equal monthly installments of principal, plus interest.          
Debt instrument interest payment term       24 months          
Debt instrument principal and interest payment term       36 months          
Debt instrument interest payment extended term       12 months          
Debt instrument, effective interest rate   13.59%   13.59%          
Interest expense, debt   $ 1,100,000 $ 0.0 $ 3,300,000 $ 0.0        
Debt issuance costs   500,000   $ 500,000          
Debt discount amortized term       5 years          
Percentage of prepayment premium year one       3.00%          
Percentage of prepayment premium year two       2.00%          
Percentage of prepayment premium year three       1.00%          
Percentage of final payment fee       6.00%          
Accrued amount related accretion on maturity payments   800,000   $ 800,000     $ 500,000    
Senior Secured 2020 Term Loan | Minimum                  
Debt Instrument [Line Items]                  
Debt instrument covenant minimum revenue   20,000,000.0   20,000,000.0          
Senior Secured 2020 Term Loan | Maximum                  
Debt Instrument [Line Items]                  
Debt instrument covenant maximum revenue   $ 84,800,000   $ 84,800,000          
Senior Secured 2020 Term Loan | Series F Redeemable Convertible Preferred Stock                  
Debt Instrument [Line Items]                  
Warrants issued to purchase shares of convertible preferred stock   300,000   300,000          
Warrant term   10 years   10 years          
Class of warrant exercise price   $ 21.88   $ 21.88          
Fair value of warrants       $ 1,800,000          
Senior Secured 2020 Term Loan | London Interbank Offered Rate (LIBOR)                  
Debt Instrument [Line Items]                  
Debt instrument, variable rate       7.00%          
Senior Secured 2020 Term Loan | Tranche One Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               $ 12,000,000.0  
Senior Secured 2020 Term Loan | Tranche Two Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               2,000,000.0  
Senior Secured 2020 Term Loan | Tranche Three Loans                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               21,000,000.0  
Long-term Debt               21,000,000.0  
Revolver 2019                  
Debt Instrument [Line Items]                  
Line of credit facility, commitment fee description       An unused line fee of 0.5% was payable monthly based on the average unused balance and a collateral management fee of 0.5% was payable monthly based on the outstanding balance of the 2019 Revolver.          
Line of credit facility, unused capacity, commitment fee percentage       0.50%          
Line of credit facility collateral fees   0.50%   0.50%          
Line of credit facility commitment fee amount       $ 10,000,000.0          
Revolver 2019 | London Interbank Offered Rate (LIBOR)                  
Debt Instrument [Line Items]                  
Debt instrument, variable rate       4.25%          
Revolving 2020                  
Debt Instrument [Line Items]                  
Line of credit facility, commitment fee description       An unused line fee of 0.5% is payable monthly based on the average unused balance and a collateral management fee of 0.5% is payable monthly based on the outstanding balance of the 2020 Revolver.          
Line of credit facility, unused capacity, commitment fee percentage       0.50%          
Line of credit facility collateral fees   0.50%   0.50%          
Line of credit facility commitment fee amount       $ 15,000,000.0          
Line of credit facility, current borrowing capacity   $ 5,000,000.0   $ 5,000,000.0          
Revolving 2020 | London Interbank Offered Rate (LIBOR)                  
Debt Instrument [Line Items]                  
Debt instrument, variable rate       4.50%          
Mid Cap Financial Services                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               40,000,000.0 25,000,000.0
Mid Cap Financial Services | Senior Secured 2019 Term Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 20,000,000.0
Mid Cap Financial Services | Senior Secured 2020 Term Loan                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               35,000,000.0  
Mid Cap Financial Services | Revolver 2019                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity                 $ 5,000,000.0
Mid Cap Financial Services | Revolving 2020                  
Debt Instrument [Line Items]                  
Maximum borrowing capacity               $ 5,000,000.0  
[1] Date the Company's registration statement (Form S-1) was declared effective