Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill by Segment

The changes in the carrying amount of goodwill by segment as of and for the quarter ended March 31, 2016 were as follows:

	December 31, 2015		Currency translation adjustments		Other Activity		March 31, 2016
In thousands
Performance Materials	$	12,898	$	186	$	—	$	13,084
Industrial Filtration	3,943		—		—		3,943
Total goodwill	$	16,841	$	186	$	—	$	17,027

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 Condensed Consolidated Balance Sheets as of March 31, 2016 and December 31, 2015:

	March 31, 2016					December 31, 2015
In thousands	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
Amortized intangible assets
License agreements	$	616	$	(616	)	$	771	$	(771	)
Technology	2,500		(352		)	2,500		(310		)
Customer Relationships	2,397		(463		)	2,412		(411		)
Patents	4,304		(3,436		)	4,137		(3,272		)
Other	619		(291		)	612		(269		)
Total amortized intangible assets	$	10,436	$	(5,158	)	$	10,432	$	(5,033	)