Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								6 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2019	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Total revenues	$ 204,570	$ 149,508	$ 131,065	$ 126,642	$ 198,166	$ 171,301	$ 135,583	$ 125,032	$ 257,707	$ 260,615	$ 407,216	$ 431,916	$ 611,786	$ 630,082	$ 612,056
HBB
Disaggregation of Revenue [Line Items]
Total revenues													611,786	630,082
Product | HBB
Disaggregation of Revenue [Line Items]
Total revenues													$ 607,307	626,423
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
Disaggregation of Revenue [Line Items]
Concentration risk (percent)													33.00%	33.00%	32.00%
Amazon | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration risk (percent)													14.00%	10.00%	12.00%
Five largest customers | Sales Revenue, Net
Disaggregation of Revenue [Line Items]
Concentration risk (percent)													58.00%	53.00%	54.00%