Acquisitions and Divestiture - Narrative (Details)				3 Months Ended		9 Months Ended
	May 09, 2019 USD ($) annual_payment	Aug. 31, 2018 USD ($)	Jul. 12, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Aug. 30, 2018 USD ($)	Jul. 06, 2016 USD ($)
Business Acquisition [Line Items]
Business acquisitions, net of cash acquired						$ (869,000)	$ 269,972,000
Operating income (loss) of acquiree since acquisition date							300,000
Purchase accounting inventory fair value step-up adjustments					$ 1,400,000		1,400,000
Amortization of intangible assets					900,000		900,000
Interest expense				$ 3,666,000	1,505,000	11,025,000	2,617,000
Gain on sale of business, net of income taxes						1,459,000	0
Revolving Credit Facility | Amended Credit Facility
Business Acquisition [Line Items]
Maximum borrowing capacity		$ 450,000,000						$ 175,000,000	$ 450,000,000
Interface
Business Acquisition [Line Items]
Voting interest acquired (as a percent)		100.00%
Business acquisitions, net of cash acquired		$ 268,400,000
Cash acquired from acquisition		5,200,000
Working capital adjustment				1,400,000
Final purchase price				267,000,000.0
Purchase price borrowings		$ 261,400,000
Net sales of acquiree since acquisition date				30,400,000	11,800,000	96,000,000.0	11,800,000
Operating income (loss) of acquiree since acquisition date				(1,300,000)	300,000	(2,100,000)
Amortization of intangible assets				3,100,000	3,000,000.0	9,200,000	9,100,000
Interest expense				2,500,000	1,100,000	7,700,000	4,800,000
Additional pro-forma net income (loss)					$ 7,800,000		$ 6,100,000
Precision Filtration Division of Precision Custom Coatings
Business Acquisition [Line Items]
Payments to acquire business			$ 1,600,000
Post-closing adjustment			$ 2,000,000.0
Selling, Product Development and Administrative Expenses | Interface
Business Acquisition [Line Items]
Amortization of intangible assets				$ 4,000,000.0		$ 12,100,000
Geosol | Disposed of by Sale, Not Discontinued Operations
Business Acquisition [Line Items]
Cash purchase price of divestiture	$ 3,000,000.0
Consideration withheld	$ 400,000
Number of annual payments | annual_payment	3
Annual payment of consideration withheld	$ 100,000
Pre-tax gain on sale of business	1,500,000
Gain on sale of business, net of income taxes	$ 1,300,000