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Schedule of Intangible and Other Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 5,247 $ 5,257
Less accumulated amortization 3,154 2,795
Intangible and other assets, net 2,093 2,462
Tradenames/trademarks (not subject to amortization) 465 465
Intangible assets 2,558 2,927
Other assets 23 21
Intangible and other assets: 2,581 2,948
Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 417 417
Minimum [Member] | Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives of intangible assets 2 years 6 months  
Minimum [Member] | Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives of intangible assets 3 years  
Maximum [Member] | Trademarks and Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives of intangible assets 8 years  
Maximum [Member] | Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful lives of intangible assets 15 years  
Accreditations [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 75 85
Estimated useful lives of intangible assets 5 years  
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 3,664 3,664
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 970 970
Estimated useful lives of intangible assets 4 years  
Noncompete Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Intangible and other assets, gross $ 121 $ 121
Estimated useful lives of intangible assets 5 years