Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2022

Intangible Assets [Abstract]

Schedule Of Intangible Assets

	June 30,		December 31,
	2022		2021
Patents and copyrights	$	14,518	$	14,755
Accumulated amortization		(12,956)		(12,970)
	$	1,562	$	1,785