Income taxes (Tables)

12 Months Ended

Dec. 31, 2024

Income Tax Disclosure [Abstract]

Schedule of Income (Loss) Before Provision for Income Taxes

Income (loss) before provision for income taxes consisted of the following:

	Year Ended December 31,
(U.S. Dollars, in thousands)	2024			2023			2022
U.S.	$	(113,197	)	$	(154,794	)	$	(22,318	)
Non-U.S.		(10,678	)		6,115			4,612
Loss before income taxes	$	(123,875	)	$	(148,679	)	$	(17,706	)

Schedule of Provision for Income Taxes

The provision for income taxes consists of the following:

	Year Ended December 31,
(U.S. Dollars, in thousands)	2024			2023			2022
U.S.
Current	$	(590	)	$	17		$	1,151
Deferred		1,572			1,160			67
		982			1,177			1,218
Non-U.S.
Current		829			2,120			578
Deferred		311			(581	)		247
		1,140			1,539			825
Income tax expense	$	2,122		$	2,716		$	2,043

Schedule of Effective Income Tax Rate Reconciliation for Continuing Operations

The differences between the income tax provision at the U.S. federal statutory tax rate and the Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022, consist of the following:

	2024						2023						2022
(U.S. Dollars, in thousands, except percentages)	Amount			Percent			Amount			Percent			Amount			Percent
Statutory U.S. federal income tax rate	$	(26,013	)		21.0	%	$	(31,222	)		21.0	%	$	(3,718	)		21.0	%
State taxes, net of U.S. federal benefit		(3,753	)		3.0			(3,452	)		2.3			(1,312	)		7.4
Foreign rate differential, including withholding taxes		(1,304	)		1.1			(738	)		0.5			475			(2.7	)
Valuation allowances, net		30,491			(24.6	)		28,322			(19.0	)		7,638			(43.1	)
Foreign income inclusions, net		320			(0.3	)		2,333			(1.6	)		1,018			(5.7	)
Research credits		(1,262	)		1.0			(1,219	)		0.8			(750	)		4.2
Unrecognized tax benefits, net of settlements		(1,393	)		1.1			71			—			(599	)		3.4
Equity compensation		2,781			(2.2	)		4,210			(2.8	)		1,441			(8.1	)
Executive compensation		2,001			(1.6	)		3,030			(2.0	)		697			(3.9	)
Contingent consideration		—			—			—			—			(3,316	)		18.7
Other, net		254			(0.2	)		1,381			(0.9	)		469			(2.6	)
Income tax expense/effective rate	$	2,122			(1.7	)%	$	2,716			(1.8	)%	$	2,043			(11.5	)%

Schedule of Deferred Tax Assets and Liabilities

The Company’s deferred tax assets and liabilities are as follows:

	December 31,
(U.S. Dollars, in thousands)	2024			2023
Intangible assets and goodwill	$	—		$	—
Inventories and related reserves		34,745			33,122
Deferred revenue and cost of goods sold		5,775			4,409
Other accruals and reserves		5,738			5,382
Accrued compensation		17,216			15,434
Provision for expected credit losses		1,797			1,821
Accrued interest		6,336			1,227
Net operating loss and tax credit carryforwards		132,524			123,210
Research and development capitalization		18,016			15,174
Lease liabilities		8,856			9,632
Other, net		8,456			4,856
Total deferred tax assets		239,459			214,267
Valuation allowance		(228,724	)		(200,192	)
Deferred tax asset, net of valuation allowance	$	10,735		$	14,075
Intangible assets and goodwill	$	(3,557	)	$	(1,662	)
Withholding taxes		(10	)		(10	)
Property, plant, and equipment		(3,390	)		(5,737	)
Right-of-use lease assets		(7,875	)		(8,755	)
Deferred tax liability	$	(14,832	)	$	(16,164	)
Net deferred tax assets (liabilities)	$	(4,097	)	$	(2,089	)
Reported as:
Deferred income tax assets (classified within other long-term assets)	$	1,542		$	2,081
Deferred income tax liabilities (classified within other long-term liabilities)		(5,639	)		(4,170	)
Net deferred tax assets (liabilities)	$	(4,097	)	$	(2,089	)

Schedule of Gross Unrecognized Tax Benefits (Excluding Interest and Penalties)

A reconciliation of the gross unrecognized tax benefits (excluding interest and penalties) for the years ended December 31, 2024, and 2023, is shown below:

(U.S. Dollars, in thousands)	2024			2023
Balance as of January 1,	$	2,974		$	1,743
Additions for current year tax positions		40			416
Increases for prior year tax positions		42			815
Settlements of prior year tax positions		—			—
Expiration of statutes		(1,333	)		—
Balance as of December 31,	$	1,723		$	2,974