Intangible assets (Tables)

12 Months Ended

Dec. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets are recorded at cost, or when acquired as a part of a business combination, at estimated fair value, less accumulated amortization. These assets are amortized on a straight-line basis over the useful lives of the assets, which the Company believes is consistent with the pattern of economic benefit provided by the assets.


		December 31,
(U.S. Dollars, in thousands)	Weighted Average Amortization Period	2024			2023
Cost
Developed technology	7.9 years	$	92,686		$	92,416
Patents	10.0 years		38,329			43,262
IPR&D	Indefinite		4,116			4,674
Customer relationships	12.5 years		49,145			49,197
License and other	9.7 years		18,359			24,584
Trademarks—finite lived	10.0 years		1,735			1,797
	9.7 years		204,370			215,930
Accumulated amortization
Developed technology		$	(40,813	)	$	(28,898	)
Patents			(35,918	)		(40,494	)
Customer relationships			(17,044	)		(11,988	)
License and other			(10,892	)		(16,240	)
Trademarks—finite lived			(900	)		(820	)
			(105,567	)		(98,440	)
Intangible assets, net		$	98,803		$	117,490

Schedule of Future Amortization Expense

Future amortization expense for intangible assets is estimated as follows:


(U.S. Dollars, in thousands)	Amortization
2025	$	19,859
2026		18,780
2027		18,418
2028		15,043
2029		7,139
Thereafter		15,448
Total finite-lived intangible assets, net	$	94,687
Indefinite-lived intangible assets		4,116
Intangible assets, net	$	98,803