Intangible Assets

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

INTANGIBLE ASSETS

Intangible assets consist of the following:

	As of December 31, 2021
	Carrying Value		Accumulated  Amortization		Net Intangible
Amortizable intangible assets:
Product technology	$	20,944	$	12,337	$	8,607
Patents and trademarks	15,535		8,294		7,241
Customer relationships	9,892		4,811		5,081
Other	10,369		5,682		4,687
Total	$	56,740	$	31,124	$	25,616

	As of December 31, 2020
	Carrying Value		Accumulated  Amortization		Net Intangible
Amortizable intangible assets:
Product technology	$	14,625	$	10,785	$	3,840
Patents and trademarks	14,325		7,495		6,830
Customer relationships	6,541		4,002		2,539
Other	5,265		5,173		92
Total	$	40,756	$	27,455	$	13,301

Amortization expense was $4.2 million, $3.4 million and $5.6 million in 2021, 2020 and 2019, respectively. The estimated amortization expense for each of the years 2022 through 2026 and thereafter is as follows:

Years ending December 31,	Amount
2022	$	3,571
2023	3,175
2024	2,767
2025	2,642
2026	1,590
Thereafter	11,871
	$	25,616