Goodwill and Intangible Assets

12 Months Ended

Dec. 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

14. GOODWILL AND INTANGIBLE ASSETS

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

	December 31
In thousands		2018			2017
Goodwill
Composite Fibers	$	79,024		$	82,744
Advanced Airlaid Materials		74,439			—
Total Goodwill		153,463			82,744
Other Intangible Assets
Composite Fibers
Tradename - nonamortizing		4,556			4,773
Technology and related		38,813			40,686
Customer relationships and related		35,029			36,705
Advanced Airlaid Materials
Tradename		4,534			—
Technology and related		18,014			1,488
Customer relationships and related		24,853			3,001
Total intangibles		125,799			86,653
Accumulated amortization		(32,185	)		(27,794	)
Net intangibles	$	93,614		$	58,859

The change in the gross value of goodwill and intangible assets was primarily due to additional amounts recorded in connection with the Steinfurt acquisition and due to currency translation adjustments. Other than goodwill and an indefinite-lived tradename, intangible assets are amortized on a straight-line basis. Customer relationships are amortized over periods ranging from 10 years to 14 years and technology and related intangible assets are amortized over periods ranging from 14 years to 20 years. The following table sets forth information pertaining to amortization of intangible assets:

In thousands			2018		2017		2016
Aggregate amortization    expense:		$	5,860	$	4,773	$	4,852
Estimated amortization    expense:
	2019		8,416
	2020		8,289
	2021		7,887
	2022		7,767
	2023		7,767

The remaining weighted average useful life of intangible assets was 11.4 years at December 31, 2018.