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Debt - Additional Information (Details)
6 Months Ended 12 Months Ended
Feb. 26, 2020
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
loan
Dec. 31, 2020
USD ($)
Nov. 12, 2021
USD ($)
Jun. 18, 2021
USD ($)
Feb. 12, 2021
USD ($)
May 13, 2020
USD ($)
May 02, 2020
USD ($)
Debt Instrument [Line Items]                    
Short-term debt and current portion of long-term debt       $ 183,000 $ 5,368,000          
Net debt issuance costs       0 283,000          
Amortization of the debt issuance costs   $ 0 $ 35,000 53,000 60,000          
Line of Credit                    
Debt Instrument [Line Items]                    
Aggregate principal amount $ 10,000,000           $ 9,000,000      
Available borrowing capacity         2,500,000          
Secured Debt | Line of Credit                    
Debt Instrument [Line Items]                    
Amount borrowed     $ 7,500,000              
Outstanding principal balance paid       $ 2,000,000            
Secured Debt | Line of Credit | Quarterly, June 30, 2020 to December 31, 2023                    
Debt Instrument [Line Items]                    
Repayments in quarterly installments 94,000                  
Secured Debt | Line of Credit | Quarterly, Thereafter December 31, 2023                    
Debt Instrument [Line Items]                    
Repayments in quarterly installments $ 188,000                  
Paycheck Protection Program | Notes Payable to Banks                    
Debt Instrument [Line Items]                    
Number of PPP loans | loan       2            
Small Business Administration Loan [Member] | Notes Payable to Banks                    
Debt Instrument [Line Items]                    
Short-term debt and current portion of long-term debt       $ 0 $ 2,993,000         $ 2,993,000
Interest rate (as a percent)         1.00%         1.00%
1% Paycheck Protection Program Loan | Notes Payable to Banks                    
Debt Instrument [Line Items]                    
Short-term debt and current portion of long-term debt       0 $ 2,000,000       $ 2,000,000  
Interest rate (as a percent)         1.00%       1.00%  
Paycheck Protection Program Loan Due May 4 2022 | Notes Payable to Banks                    
Debt Instrument [Line Items]                    
Short-term debt and current portion of long-term debt               $ 149,000    
Interest rate (as a percent)               1.00%    
Paycheck Protection Program Loan due October 2026 | Notes Payable to Banks                    
Debt Instrument [Line Items]                    
Short-term debt and current portion of long-term debt       $ 183,000 $ 0 $ 183,000        
Interest rate (as a percent)       1.00%   1.00%        
Credit Agreement | Secured Debt | Line of Credit                    
Debt Instrument [Line Items]                    
Interest paid       $ 224,000 $ 227,000