Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Total revenues	$ 743,179	$ 740,749	$ 745,357
Products
Disaggregation of Revenue [Line Items]
Total revenues	739,520
Licensing
Disaggregation of Revenue [Line Items]
Total revenues	3,659
HBB
Disaggregation of Revenue [Line Items]
Total revenues	633,771
HBB | Products
Disaggregation of Revenue [Line Items]
Total revenues	630,112
HBB | Licensing
Disaggregation of Revenue [Line Items]
Total revenues	3,659
KC
Disaggregation of Revenue [Line Items]
Total revenues	113,469
KC | Products
Disaggregation of Revenue [Line Items]
Total revenues	113,469
KC | Licensing
Disaggregation of Revenue [Line Items]
Total revenues	$ 0
Revenue | Customer Concentration Risk | Wal-Mart, Inc. | HBB
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	33.00%	32.00%	32.00%
Revenue | Customer Concentration Risk | Amazon.com, Inc. | HBB
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	11.00%	12.00%	10.00%
Revenue | Customer Concentration Risk | Five largest customers | HBB
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	54.00%	55.00%	54.00%
Maximum | Electric Appliances
Disaggregation of Revenue [Line Items]
Warranty term	10 years
Maximum | Majority of Other Products
Disaggregation of Revenue [Line Items]
Warranty term	3 years
Minimum | Majority of Other Products
Disaggregation of Revenue [Line Items]
Warranty term	1 year