Goodwill and Other Intangible Assets (Schedule of Intangible Assets and Goodwill) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2026	Sep. 30, 2025	Dec. 31, 2025
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 86,169		$ 86,839
Accumulated amortization and other	(72,052)		(71,867)
Net carrying amount	14,117		14,972
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (including goodwill), gross	189,274		190,795
Goodwill, accumulated impairment loss	(21,829)		(21,832)
Goodwill	161,119		162,507
Total Indefinite-lived intangible assets:	(167,445)		(168,963)
Machine Clothing
Indefinite-Lived Intangible Assets [Line Items]
Goodwill, gross	68,895		69,911
Goodwill	68,895		69,911
Albany Engineered Composites
Indefinite-Lived Intangible Assets [Line Items]
Goodwill, gross	114,053		114,428
Goodwill, accumulated impairment loss	(21,829)		(21,832)
Goodwill	92,224		92,596
Heimbach Trade name
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	6,326		6,456
AEC Trademarks and trade names
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	208		208
Accumulated amortization and other	(208)		(208)
Net carrying amount	$ 0		0
AEC Trademarks and trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	6 years	6 years
AEC Trademarks and trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	15 years	15 years
AEC Technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 6,406		6,530
Accumulated amortization and other	(4,193)		(4,114)
Net carrying amount	$ 2,213		2,416
AEC Technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	10 years	10 years
AEC Technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	15 years	15 years
AEC Intellectual property
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	15 years	15 years
Gross carrying amount	$ 1,250		1,250
Accumulated amortization and other	(527)		(505)
Net carrying amount	723		745
AEC Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	69,492		69,560
Accumulated amortization and other	(64,532)		(64,331)
Net carrying amount	$ 4,960		5,229
AEC Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	8 years	8 years
AEC Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	15 years	15 years
Heimbach Developed technology
Finite-Lived Intangible Assets [Line Items]
Amortization  life in years	9 years	9 years
Gross carrying amount	$ 8,813		9,291
Accumulated amortization and other	(2,592)		(2,709)
Net carrying amount	$ 6,221		$ 6,582