Quarterly report pursuant to Section 13 or 15(d)

Debt - Loan Payable and Notes Payable (Details)

v3.22.1
Debt - Loan Payable and Notes Payable (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Debt Instrument [Line Items]    
Less current portion $ (459) $ (831)
3.75% Small Business Administration installment loan due May 2050    
Debt Instrument [Line Items]    
Interest rate per annum 3.75%  
2.5% director and officer insurance policy promissory note    
Debt Instrument [Line Items]    
Interest rate per annum 2.50%  
6.0 % executive and officer insurance policy promissory note    
Debt Instrument [Line Items]    
Interest rate per annum 6.00%  
Notes Payable    
Debt Instrument [Line Items]    
Long term debt $ 610 977
Less current portion of notes payable 438 806
Debt, Net of current portion 151 146
Notes Payable | Small Business Administration Loan    
Debt Instrument [Line Items]    
Less current portion (21) (25)
Notes Payable | 3.75% Small Business Administration installment loan due May 2050    
Debt Instrument [Line Items]    
Long term debt 172 171
Notes Payable | Non-interest-bearing promissory note    
Debt Instrument [Line Items]    
Long term debt 210 210
Notes Payable | 2.5% director and officer insurance policy promissory note    
Debt Instrument [Line Items]    
Long term debt 96 385
Notes Payable | 6.0 % executive and officer insurance policy promissory note    
Debt Instrument [Line Items]    
Long term debt $ 132 $ 211