Other Intangible Assets

12 Months Ended

Dec. 31, 2021

5.	Other Intangible Assets

Other intangible assets consist of the following (U.S. dollars in thousands):

	Carrying Amount at December 31,
	2021		2020
Indefinite life intangible assets:
Trademarks and trade names	$	24,599	$	24,599
Other indefinite lived intangibles		—		3,763
	$	24,599	$	28,362

	December 31, 2021				December 31, 2020
Finite life intangible assets:	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization		Weighted- average Amortization Period
Scanner technology	$	40,716	$	40,716	$	40,716	$	40,716	18 years
Developed technology		43,841		24,697		32,546		21,680	14 years
Sales force network		11,598		11,598		11,598		11,598	15 years
Trademarks		8,989		3,827		6,145		2,938	10 years
Other		51,176		23,090		71,095		23,998	10 years
	$	156,320	$	103,928	$	162,100	$	100,930	14 years

Amortization of finite-life intangible assets totaled $11.7 million, $9.8 million and $13.4 million for the years ended December 31, 2021, 2020 and 2019, respectively.

The estimated annual amortization expense for each of the five succeeding fiscal years are as follows (U.S. dollars in thousands):

Year Ending December 31,
2022	$	9,282
2023		9,135
2024		8,625
2025		7,502
2026		7,135

Indefinite life intangible assets are not amortized, rather they are subject to annual impairment tests. Finite life intangibles are amortized over their useful lives unless circumstances occur that cause the Company to revise such lives or review such assets for impairment. In connection with the Company’s decision to exit the Grow Tech segment, a $3.8 million impairment charge related to other indefinite lived intangibles and a $5.2 million impairment charge related to other finite lived intangibles was recorded in the year ended December 31, 2021, see Note 20 for further discussion restructuring and impairment of the Grow Tech segment.