Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 236,856	$ 223,048
Accumulated depreciation	(156,268)	(148,728)
Net property and equipment	80,588	74,320	[1]
Machinery and Equipment, Gross	94,446	96,909
Furniture and Fixtures, Gross	3,499	3,638
Construction in Progress, Gross	13,688	6,003
Land, Buildings and Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	60,457	56,716
Molds [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	38,620	36,436
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Total property and equipment, cost	$ 26,146	$ 23,346

[1] December 31, 2015 balances were derived from audited consolidated financial statements.