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Goodwill and Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 46,436	$ 42,160
Accumulated Amortization	(35,374)	(34,263)
Total	11,062	7,897
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	28,300	28,300
Accumulated Amortization	(26,917)	(26,324)
Total	1,383	1,976
Intellectual Property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	18,136	13,860
Accumulated Amortization	(8,457)	(7,939)
Total	$ 9,679	$ 5,921

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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