Acquisitions - Additional Information (Details) - USD ($)			3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 19, 2016	Oct. 21, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Line of credit facility, maximum borrowing capacity			$ 575,000,000.0		$ 575,000,000.0
Goodwill			340,533,000		340,533,000		$ 340,338,000
Net income			24,186,000	$ 15,976,000	67,020,000	$ 49,956,000
Senscient, Inc.
Business Acquisition [Line Items]
Voting interest acquired (percentage)	100.00%
Purchase price	$ 19,100,000
Integration costs			300,000		300,000
Latchways Acquisition
Business Acquisition [Line Items]
Purchase price		$ 190,900,000
Integration costs					$ 500,000
Intangible asset, useful life (years)					15 years
Amortization expense, year one			4,500,000		$ 4,500,000
Amortization expense, year two			4,500,000		4,500,000
Amortization expense, year three			4,500,000		4,500,000
Amortization expense, year four			4,500,000		4,500,000
Amortization expense, year five			4,500,000		4,500,000
Purchase accounting adjustment, inventory		1,600,000
Inventory acquired during business combination, depreciation expense			100,000		500,000		900,000
Amortization expense on inventory, next fiscal year					500,000
Depreciation expense, year one			900,000		900,000
Depreciation expense, year two			900,000		900,000
Depreciation expense, year three			900,000		900,000
Depreciation expense, year four			900,000		900,000
Depreciation expense, year five			900,000		900,000
Goodwill		98,000,000
Goodwill expected to be tax deductible		0
Integration costs, after tax					400,000
Sales			14,000,000		42,900,000
Net income			1,200,000		2,400,000
Inventory acquired during business combination, depreciation expense, net of tax			100,000		300,000
Revolving Credit Facility | Senior Notes
Business Acquisition [Line Items]
Line of credit facility, maximum borrowing capacity							$ 125,000,000.0
International
Business Acquisition [Line Items]
Goodwill			141,700,000		141,700,000
International | Latchways Acquisition
Business Acquisition [Line Items]
Goodwill		96,600,000
Americas
Business Acquisition [Line Items]
Goodwill			$ 198,800,000		$ 198,800,000
Americas | Latchways Acquisition
Business Acquisition [Line Items]
Goodwill		$ 1,400,000