Quarterly Financial Information (Unaudited) (Additional Information) (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Discrete tax benefits related to the completion of a tax credit project and release of reserves for previously uncertain tax positions		$ 1,200
Long-lived asset impairment charge related to Solutech									$ 1,354	$ 0	$ 0
Discrete income tax charges related to changes in state tax legislation	$ 1,200
Net income	5,319	11,186	$ 10,817	$ 18,937	$ 5,733	$ 4,158	$ 8,240	$ 3,716	$ 46,259	21,847	$ 19,155
Industrial Filtration
Business Acquisition [Line Items]
Purchase accounting adjustment to gross profit						(200)	(500)	(1,300)
Purchase accounting adjustment to net income						(200)	(400)	(900)
Transaction related costs								$ 2,200
Domestic Pension Plan
Business Acquisition [Line Items]
Non-cash pension settlement charge associated with domestic defined benefit pension plan						$ 3,000
Solutech
Business Acquisition [Line Items]
Long-lived asset impairment charge related to Solutech	1,400
Thermal/Acoustical Metals Segment
Business Acquisition [Line Items]
Sales commission settlement							$ 2,000			$ 2,900
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | Life Sciences Vital Fluids
Business Acquisition [Line Items]
After-tax gain due to the sale of Life Sciences Vital Fluids				$ 11,800
Overstatement of Net Income | Restatement Adjustment
Business Acquisition [Line Items]
Net income	$ (400)	$ 400
Reduction of net income due to overstatement (price per share)	$ (0.02)