Intangible Assets, Net and Goodwill (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule Of Identifiable Intangible Assets

	December 31,
(in thousands)	2019		2018
Intangible assets subject to amortization:
Patents and purchased technology	$	14,198	$	14,198
Customer relationships	23,000		23,000
Gross carrying amount	37,198		37,198
Accumulated amortization:
Patents and purchased technology	(13,311)		(11,981)
Customer relationships	(15,713)		(14,063)
Accumulated amortization	(29,024)		(26,044)
Net carrying amount	8,174		11,154
Intangible assets not subject to amortization	115,421		115,421
Intangible assets, net	$	123,595	$	126,575