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Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Finite-Lived Intangible Assets
Intangible assets consisted of the following:
(in thousands)December 31, 2021December 31, 2020
Patents$432 $430 
Less accumulated amortization(217)(172)
$215 $258