Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Reporting [Abstract]

Schedule of Consolidated Net Sales by Segment

Consolidated net sales by segment:

	Quarter Ended   June 30,						Six Months Ended   June 30,
In thousands	2018			2017			2018			2017
Performance Materials Segment:
Filtration	$	20,574		$	19,255		$	41,264		$	38,100
Thermal Insulation	7,796			7,407			15,303			14,833
Life Sciences Filtration	2,864			2,639			5,360			5,119
Performance Materials Segment net sales	31,234			29,301			61,927			58,052
Technical Nonwovens Segment:
Industrial Filtration	39,170			36,325			79,401			70,538
Advanced Materials (1)	32,542			30,773			59,852			55,478
Technical Nonwovens net sales	71,712			67,098			139,253			126,016
Thermal Acoustical Solutions Segment:
Parts	82,920			80,648			171,041			162,462
Tooling	7,249			5,354			20,565			8,325
Thermal Acoustical Solutions Segment net sales	90,169			86,002			191,606			170,787
Eliminations and Other (1)	(6,702		)	(7,522		)	(14,713		)	(14,489		)
Consolidated Net Sales	$	186,413		$	174,879		$	378,073		$	340,366

Schedule of Operating Income by Segment

Operating income by segment:

	Quarter Ended   June 30,						Six Months Ended   June 30,
In thousands	2018			2017 (2)			2018			2017 (2)
Performance Materials	$	3,649		$	3,933		$	6,290		$	5,591
Technical Nonwovens	6,118			6,535			11,124			11,203
Thermal Acoustical Solutions	8,820			15,395			21,434			30,191
Corporate Office Expenses	(6,338		)	(5,826		)	(12,563		)	(11,800		)
Consolidated Operating Income	$	12,249		$	20,037		$	26,285		$	35,185

(1) Included in the Technical Nonwovens segment and Eliminations and Other is $5.8 million and $6.8 million in intercompany sales to the Thermal Acoustical Solutions segment for the quarters ended June 30, 2018 and 2017, respectively, and $12.9 million and $13.1 million for the six months ended June 30, 2018 and 2017, respectively.

(2) The quarter and six months ended June 30, 2017 segment operating income amounts of $0.2 million and $0.4 million, respectively, have been reclassified to other expense (income), net, to give effect to the adoption of ASU No. 2017-07, "Compensation - Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost".