Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Nov. 03, 2017	Mar. 31, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Accounts receivable			$ 2,762
Inventory			32,206
Other assets			553
Total current assets			35,521
Property, plant and equipment			9,473
Intangible assets			4,900
Goodwill	$ 26,070		19,916	$ 19,677
Other			1,122
Total assets acquired			51,016
Current liabilities			5,328
Deferred tax liability			9,322
Long-term debt			516
Other long-term liabilities			724
Total liabilities assumed			15,890
Net assets acquired			$ 35,126
Simplicity Creative Group
Business Acquisition [Line Items]
Cash		$ 1,889
Accounts receivable		11,787
Inventory		31,651
Other assets		1,289
Total current assets		46,616
Property, plant and equipment		14,975
Intangible assets		22,282
Goodwill		6,154
Other		211
Total assets acquired		90,238
Current liabilities		16,782
Long-term debt		17
Other long-term liabilities		4,523
Total liabilities assumed		21,322
Net assets acquired		$ 68,916