Summary of Significant Accounting Policies - Net Revenue Disaggregated by Product Categories (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Total net revenue	$ 59,800	$ 30,368	$ 85,428	$ 48,213
Product Revenue
Disaggregation Of Revenue [Line Items]
Total net revenue	59,454	29,971	84,722	47,283
Product Revenue | Environmental Appliances (i.e., Dehumidifiers and Air Conditioners)
Disaggregation Of Revenue [Line Items]
Total net revenue	34,592	19,111	47,862	25,674
Product Revenue | Small Home Appliances
Disaggregation Of Revenue [Line Items]
Total net revenue	8,478	5,096	14,113	9,326
Product Revenue | Cosmetics, Skincare, and Health Supplements
Disaggregation Of Revenue [Line Items]
Total net revenue	2,995	2,610	6,363	5,777
Product Revenue | Personal Protective Equipment
Disaggregation Of Revenue [Line Items]
Total net revenue	5,727		5,727
Product Revenue | Cookware, Kitchen Tools and Gadgets
Disaggregation Of Revenue [Line Items]
Total net revenue	2,069	1,920	3,058	3,959
Product Revenue | Hair Appliances and Accessories
Disaggregation Of Revenue [Line Items]
Total net revenue	1,876	784	2,917	1,858
Product Revenue | All Others
Disaggregation Of Revenue [Line Items]
Total net revenue	3,718	450	4,682	689
Managed SaaS
Disaggregation Of Revenue [Line Items]
Total net revenue	$ 345	$ 397	$ 706	$ 930