Goodwill and Long-Lived Assets (Tables)

12 Months Ended

Dec. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Gross and Net Carrying Amounts of Goodwill

Gross and net carrying amounts of goodwill at December 31, 2018 and 2017 were as follows:

In thousands	Performance Materials		Technical Nonwovens		Thermal Acoustical Solutions			Totals
Goodwill	$	13,307	$	55,662	$	12,160		$	81,129
Accumulated amortization/impairment	—		—		(12,160		)	(12,160		)
Balance at December 31, 2017	13,307		55,662		—			68,969
Goodwill	144,626		52,337		12,160			209,123
Accumulated amortization/impairment	—		—		(12,160		)	(12,160		)
Balance at December 31, 2018	$	144,626	$	52,337	$	—		$	196,963

Schedule of Changes in the Carrying Amounts of Goodwill

The changes in the carrying amounts of goodwill in 2018 and 2017 were as follows:

In thousands	Performance Materials			Technical Nonwovens			Totals
Balance at January 1, 2017	$	12,777		$	50,829		$	63,606
Goodwill addition	—			323			323
Currency translation adjustment	530			4,510			5,040
Balance at December 31, 2017	13,307			55,662			68,969
Goodwill addition	131,509			—			131,509
Currency translation adjustment	(190		)	(3,325		)	(3,515		)
Balance at December 31, 2018	$	144,626		$	52,337		$	196,963

Schedule of Amortization of the Company's Acquired Intangible Assets other than Goodwill

The table below presents the gross carrying amount and, as applicable, the accumulated amortization of the Company’s acquired intangible assets other than goodwill included in “Other intangible assets, net” in the Consolidated Balance Sheets as of December 31, 2018 and 2017:

	December 31, 2018					December 31, 2017
In thousands	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets
Customer relationships	$	141,455	$	(11,453	)	$	39,474	$	(4,460	)
Patents	4,333		(3,816		)	4,504		(3,821		)
Technology	2,500		(810		)	2,500		(644		)
Trade names	7,235		(2,840		)	4,288		(1,461		)
License agreements	619		(619		)	640		(640		)
Other	561		(561		)	586		(423		)
Total amortized intangible assets	$	156,703	$	(20,099	)	$	51,992	$	(11,449	)