Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Total revenues	$ 612,843	$ 629,710	$ 612,229
HBB
Disaggregation of Revenue [Line Items]
Total revenues	612,843	629,710
Product | HBB
Disaggregation of Revenue [Line Items]
Total revenues	$ 608,364	626,051
Electric Appliances | Maximum
Disaggregation of Revenue [Line Items]
Warranty term	10 years
Product and Service, Other | Maximum
Disaggregation of Revenue [Line Items]
Warranty term	3 years
Product and Service, Other | Minimum
Disaggregation of Revenue [Line Items]
Warranty term	1 year
Licensing | HBB
Disaggregation of Revenue [Line Items]
Total revenues	$ 4,479	$ 3,659
Wal-Mart | Sales Revenue, Net | HBB | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	33.00%	33.00%	32.00%
Amazon | Sales Revenue, Net | HBB | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	14.00%	10.00%	12.00%
Five largest customers | Sales Revenue, Net | HBB | Customer Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (percent)	58.00%	53.00%	54.00%