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Summary of Significant Accounting Policies (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
item
customer
Mar. 31, 2021
USD ($)
item
Dec. 31, 2021
USD ($)
customer
item
May 06, 2021
USD ($)
Sep. 30, 2020
Feb. 29, 2020
Concentration Risk [Line Items]            
Concentrations of credit risk (as a percent) 100.00% 100.00%        
Impairment of long-lived assets $ 0 $ 0        
Revenues recognized (38)          
Interest rate (as a percent)           8.00%
Facility $ 90,863   $ 90,863      
Convertible Note due in May 2024            
Concentration Risk [Line Items]            
Interest rate (as a percent) 7.50%          
Fair value of convertible debt $ 74,633   76,614 $ 17,063    
Convertible Note $ 87,863   87,863 $ 100,000    
2020 short-term convertible notes payable            
Concentration Risk [Line Items]            
Interest rate (as a percent)         8.00%  
Term note and revolving working capital facility            
Concentration Risk [Line Items]            
Interest rate (as a percent) 15.00%          
Facility $ 3,000   3,000      
Notes payable, fair value 3,899   $ 4,173      
Service Revenue [Member]            
Concentration Risk [Line Items]            
Revenues recognized $ 15          
Customer | Accounts receivable | One Customer            
Concentration Risk [Line Items]            
Concentrations of credit risk (as a percent) 40.00%   40.00%      
Customer | Accounts receivable | Two Customers            
Concentration Risk [Line Items]            
Concentrations of credit risk (as a percent) 22.00%   20.00%      
Customer | Accounts receivable | Three Customers            
Concentration Risk [Line Items]            
Number of customers | customer 3   3      
Concentrations of credit risk (as a percent) 15.00%   17.00%      
Supplier | Accounts payable | One Supplier            
Concentration Risk [Line Items]            
Concentrations of credit risk (as a percent) 36.00%   20.00%      
Supplier | Accounts payable | Two Suppliers            
Concentration Risk [Line Items]            
Number of suppliers | item 2          
Concentrations of credit risk (as a percent) 18.00%   19.00%      
Supplier | Accounts payable | Three Suppliers            
Concentration Risk [Line Items]            
Number of suppliers | item     3      
Concentrations of credit risk (as a percent)     11.00%      
Supplier | Purchases | One Supplier            
Concentration Risk [Line Items]            
Number of suppliers | item 1          
Concentrations of credit risk (as a percent) 13.00% 23.00%        
Supplier | Purchases | Two Suppliers            
Concentration Risk [Line Items]            
Number of suppliers | item   2        
Concentrations of credit risk (as a percent)   17.00%