Acquisitions and Divestitures - Pro-Forma Additional Information (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income/(loss)	$ 13,848,000	$ 10,675,000	$ 13,125,000	$ 11,669,000	$ 4,420,000	$ 12,785,000	$ 10,813,000	$ 9,169,000	$ 49,317,000	$ 37,187,000	$ 46,259,000
Texel
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Amortization expense									3,900,000	3,900,000	3,500,000
Acquisition related costs									100,000		800,000
Depreciation expense										1,200,000	2,100,000
Interest expense										800,000	1,200,000
Reclassification from cost of sales										900,000	1,600,000
Reclassification to net sales										900,000	1,600,000
Texel | Acquisition-related Costs
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income/(loss)										4,300,000
Texel | Fair Value Adjustment to Inventory
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income/(loss)									$ 1,100,000	2,000,000
Inventory adjustment expense										$ 0	$ 3,200,000