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Schedule of Intangible and Other Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 5,247 $ 5,247
Less accumulated amortization 3,246 3,154
Intangible and other assets, net 2,001 2,093
Tradenames/trademarks (not subject to amortization) 465 465
Intangible assets 2,466 2,558
Other assets 25 23
Intangible and other assets: 2,491 2,581
Trademarks and Trade Names [Member]    
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 417 417
Minimum [Member] | Trademarks and Trade Names [Member]    
Intangible assets subject to amortization:    
Estimated useful lives of intangible assets 2 years 6 months  
Minimum [Member] | Customer Relationships [Member]    
Intangible assets subject to amortization:    
Estimated useful lives of intangible assets 3 years  
Maximum [Member] | Trademarks and Trade Names [Member]    
Intangible assets subject to amortization:    
Estimated useful lives of intangible assets 8 years  
Maximum [Member] | Customer Relationships [Member]    
Intangible assets subject to amortization:    
Estimated useful lives of intangible assets 15 years  
Accreditations [Member]    
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 75 75
Estimated useful lives of intangible assets 5 years  
Customer Relationships [Member]    
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 3,664 3,664
Patents [Member]    
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 970 970
Estimated useful lives of intangible assets 4 years  
Noncompete Agreements [Member]    
Intangible assets subject to amortization:    
Intangible and other assets, gross $ 121 $ 121
Estimated useful lives of intangible assets 5 years