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Intangible and Other Assets - Schedule of Intangible and Other Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Intangible and other assets, gross	$ 5,257	$ 5,257
Less accumulated amortization	2,877	2,795
Intangible and other assets, net	2,380	2,462
Tradenames/trademarks (not subject to amortization)	465	465
Intangible assets	2,845	2,927
Other assets	13	21
Intangible and other assets:	2,858	2,948
Tradenames and Trademarks [Member]
Intangible and other assets, gross	417	417
Accreditations [Member]
Intangible and other assets, gross	$ 85	85
Estimated useful lives of intangible assets	5 years
Customer Relationships [Member]
Intangible and other assets, gross	$ 3,664	3,664
Patents [Member]
Intangible and other assets, gross	$ 970	970
Estimated useful lives of intangible assets	4 years
Non-compete Agreements [Member]
Intangible and other assets, gross	$ 121	$ 121
Estimated useful lives of intangible assets	5 years
Minimum [Member] | Tradenames and Trademarks [Member]
Estimated useful lives of intangible assets	2 years 6 months
Minimum [Member] | Customer Relationships [Member]
Estimated useful lives of intangible assets	3 years
Maximum [Member] | Tradenames and Trademarks [Member]
Estimated useful lives of intangible assets	8 years
Maximum [Member] | Customer Relationships [Member]
Estimated useful lives of intangible assets	15 years

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- Definition

Finite lived intangible assets not subject to amortization.

+ References

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+ References

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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-Publisher FASB
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