GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill consisted of the following:

	Year Ended December 31,
	2021
	(In thousands)
Beginning balance	$	—
Acquisition of business	7,470
Impairment losses	—
Ending balance	$	7,470

Schedule of Finite-Lived Intangible Assets

Other intangible assets, net consisted of the following:

	December 31, 2021
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Book Value
		(In thousands)
Patents:
Intellectual property operations	6 years	$	331,403	$	(294,341)	$	37,062
Industrial operations	7 years	3,400		(112)		3,288
Total patents		334,803		(294,453)		40,350
Customer relationships - industrial operations	7 years	5,300		(174)		5,126
Trade name and trademarks - industrial operations	7 years	3,430		(113)		3,317
Total		$	343,533	$	(294,740)	$	48,793

	December 31, 2020
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Book Value
		(In thousands)
Patents:
Intellectual property operations	7 years	$	336,834	$	(319,922)	$	16,912
Total patents		$	336,834	$	(319,922)	$	16,912

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The following table presents the scheduled annual aggregate amortization expense (in thousands):

Years Ending December 31,
2022	$	12,136
2023	12,068
2024	10,692
2025	8,348
2026	2,483
Thereafter	3,066
Total	$	48,793