Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Gross and net Carrying Amounts of Goodwill

Gross and net carrying amounts of goodwill at December 31, 2016 and 2015 were as follows:

In thousands	Performance Materials		Technical Nonwovens		Thermal/ Acoustical Metals			Totals
Goodwill	$	12,898	$	3,943	$	12,160		$	29,001
Accumulated amortization/impairment	—		—		(12,160		)	(12,160		)
Balance at December 31, 2015	12,898		3,943		—			16,841
Goodwill	12,777		50,829		12,160			75,766
Accumulated amortization/impairment	—		—		(12,160		)	(12,160		)
Balance at December 31, 2016	$	12,777	$	50,829	$	—		$	63,606

Changes in the Carrying Amounts of Goodwill

The changes in the carrying amounts of goodwill in 2015 and 2016 were as follows:

In thousands	Performance Materials			Technical Nonwovens			Other Products and Services			Totals
Balance at January 1, 2014	$	13,340		$	3,943		$	4,660		$	21,943
Goodwill adjustment	—			—			(4,660		)	(4,660		)
Currency translation adjustment	(442		)	—			—			(442		)
Balance at December 31, 2015	12,898			3,943			—			16,841
Goodwill addition	—			47,987			—			47,987
Currency translation adjustment	(121		)	(1,101		)	—			(1,222		)
Balance at December 31, 2016	$	12,777		$	50,829		$	—		$	63,606

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, 2016 and 2015:

	December 31, 2016					December 31, 2015
In thousands	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets
Customer relationships	$	36,131	$	(1,284	)	$	2,412	$	(411	)
Patents	4,028		(3,300		)	4,137		(3,272		)
Technology	2,500		(477		)	2,500		(310		)
Trade names	3,912		(394		)	220		(82		)
License agreements	583		(583		)	771		(771		)
Other	536		(205		)	392		(187		)
Total amortized intangible assets	$	47,690	$	(6,243	)	$	10,432	$	(5,033	)