Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Narrative (Details)

v3.22.1
Long-Term Debt - Narrative (Details)
1 Months Ended 12 Months Ended
Aug. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
payment
Dec. 31, 2019
USD ($)
Jul. 31, 2021
USD ($)
Debt Instrument [Line Items]          
Proceeds from line of credit   $ 6,000,000 $ 0 $ 0  
Revolving credit facility          
Debt Instrument [Line Items]          
Outstanding balance   $ 10,000,000      
Silicon Valley Bank Note          
Debt Instrument [Line Items]          
Note payable     $ 4,000,000    
Number of required principal payments | payment     36    
Amount of required principal payment     $ 100,000    
Note payable converted into deemed advance the line of credit $ 4,000,000        
Silicon Valley Bank Line of Credit | Revolving credit facility          
Debt Instrument [Line Items]          
Borrowing capacity 50,000,000   $ 10,000,000   $ 10,000,000
Proceeds from line of credit 6,000,000        
Outstanding balance $ 10,000,000        
Frequency of debt agreement fee annual        
Debt agreement fee $ 100,000        
Unused line fee (percent) 0.15%        
Debt covenant, outstanding principal balance threshold $ 10,000,000        
Debt covenant, minimum unrestricted cash and cash equivalents 100,000,000        
Debt covenant, minimum consolidated liquidity $ 20,000,000        
Silicon Valley Bank Line of Credit | Revolving credit facility | Minimum          
Debt Instrument [Line Items]          
Interest rate, minimum (percent) 3.50%        
Silicon Valley Bank Line of Credit | Revolving credit facility | Prime rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (percent) 0.25%