Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Goodwill

The following table sets forth the gross carrying value, accumulated amortization and net values of intangible assets and goodwill as of March 31, 2026 and December 31, 2025:

	March 31, 2026
(in thousands)	Amortization  life in years	Gross carrying amount		Accumulated amortization and other		Net carrying amount
Finite-lived assets:
AEC Trademarks and trade names	6-15	$	208	$	(208)	$	—
AEC Technology	10-15	6,406		(4,193)		2,213
AEC Intellectual property	15	1,250		(527)		723
AEC Customer relationships	8-15	69,492		(64,532)		4,960
Heimbach Developed technology	9	8,813		(2,592)		6,221
Total Finite-lived intangible assets		$	86,169	$	(72,052)	$	14,117
Indefinite-lived intangible assets:
Heimbach Trade name		$	6,326	$	—	$	6,326
MC Goodwill		68,895		—		68,895
AEC Goodwill		114,053		(21,829)		92,224
Total Indefinite-lived intangible assets:		$	189,274	$	(21,829)	$	167,445

	December 31, 2025
(in thousands)	Amortization  life in years	Gross carrying amount		Accumulated amortization and other		Net carrying amount
Finite-lived assets:
AEC Trademarks and trade names	6-15	$	208	$	(208)	$	—
AEC Technology	10-15	6,530		(4,114)		2,416
AEC Intellectual property	15	1,250		(505)		745
AEC Customer relationships	8-15	69,560		(64,331)		5,229
Heimbach Developed technology	9	9,291		(2,709)		6,582
Total Finite-lived assets		$	86,839	$	(71,867)	$	14,972
Indefinite-lived intangible assets:
Heimbach Trade name		$	6,456	$	—	$	6,456
MC Goodwill		69,911		—		69,911
AEC Goodwill		114,428		(21,832)		92,596
Total Indefinite-lived intangible assets:		$	190,795	$	(21,832)	$	168,963

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The changes in intangible assets, net and goodwill from December 31, 2025 to March 31, 2026, were as follows:

(in thousands)	December 31, 2025		Other Changes		Amortization		Currency Translation		March 31, 2026
Finite-lived intangible assets:
AEC Trademarks and trade names	$	—	$	—	$	—	$	—	$	—
AEC Technology	2,416		—		(151)		(52)		2,213
AEC Intellectual property	745		—		(22)		—		723
AEC Customer relationships	5,229		—		(236)		(33)		4,960
Heimbach Developed technology	6,582		—		(242)		(119)		6,221
Total Finite-lived intangible assets	$	14,972	$	—	$	(651)	$	(204)	$	14,117
Indefinite-lived intangible assets:
Heimbach Trade name	$	6,456	$	—	$	—	$	(130)	$	6,326
MC Goodwill	69,911		—		—		(1,016)		68,895
AEC Goodwill	92,596		—		—		(372)		92,224
Total Indefinite-lived assets:	$	168,963	$	—	$	—	$	(1,518)	$	167,445