Acquisitions and Divestitures (Acquisition Narrative) (Details) - USD ($)			6 Months Ended	12 Months Ended
	Jul. 07, 2016	Feb. 20, 2014	Dec. 31, 2016	Dec. 31, 2016	Jul. 06, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Inventory adjustments			$ 893,000	$ 893,000		$ 316,000
Amended Credit Facility
Business Acquisition [Line Items]
Maximum borrowing capacity increased value		$ 100,000,000
Amended Credit Facility | Revolving Credit Facility
Business Acquisition [Line Items]
Maximum borrowing capacity	$ 175,000,000				$ 100,000,000
Gutsche
Business Acquisition [Line Items]
Percentage of voting interest acquired			100.00%	100.00%
Payment to acquire business				$ 57,600,000
Estimated post-closing working capital adjustment				3,000,000
Purchase price borrowings			$ 31,600,000.0	31,600,000.0
Investment in joint venture			0	0
Cash acquired			9,400,000	9,400,000
Texel
Business Acquisition [Line Items]
Percentage of voting interest acquired	100.00%
Payment to acquire business	$ 102,700,000
Purchase price borrowings	85,000,000.0
Investment in joint venture	616,000
Net sales of acquiree since acquisition date			40,900,000
Operating income of acquiree since acquisition date			$ 2,500,000
Purchase accounting inventory fair value step-up adjustment				2,000,000
Inventory adjustments	2,400,000
Cash acquired	$ 1,610,000
Texel | Afitex Texel Geosynthetiques, Inc.
Business Acquisition [Line Items]
Interest in joint venture as part of acquisition	50.00%
Investment in joint venture	$ 600,000
Texel Brand and Gutsche
Business Acquisition [Line Items]
Transaction related costs				$ 3,700,000
Andrew Industries Limited
Business Acquisition [Line Items]
Payment to acquire business		86,900,000
Purchase price borrowings		60,000,000
Cash acquired		7,500,000
Post-closing adjustment		$ 200,000