Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

The following table sets forth information with respect to goodwill and other intangible assets:

	December 31
In thousands		2019			2018
Goodwill
Composite Fibers	$	77,775		$	79,024
Airlaid Materials		73,041			74,439
Total Goodwill	$	150,816		$	153,463
Other Intangible Assets
Composite Fibers
Tradename - nonamortizing	$	4,470		$	4,556
Technology and related		38,256			38,813
Customer relationships and related		34,445			35,029
Airlaid Materials
Tradename		3,625			4,534
Technology and related		18,406			18,014
Customer relationships and related		24,385			24,853
Total intangibles		123,587			125,799
Accumulated amortization		(39,852	)		(32,185	)
Net intangibles	$	83,735		$	93,614

Summary of Amortization of Intangible Assets

The following table sets forth information pertaining to amortization of intangible assets:

In thousands			2019		2018		2017
Aggregate amortization expense:		$	7,986	$	5,860	$	4,773
Estimated amortization expense:
	2020		7,864
	2021		7,482
	2022		7,368
	2023		7,368
	2024		7,368