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Schedule of Intangible and Other Assets (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |
Intangible and other assets, gross | $ 5,247 | $ 5,257
Less accumulated amortization | 2,969 | 2,795
Intangible and other assets, net | 2,278 | 2,462
Tradenames/trademarks (not subject to amortization) | 465 | 465
Intangible assets | 2,743 | 2,927
Other assets | 23 | 21
Intangible and other assets: | 2,766 | 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 |

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