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Concentrations (Tables)
12 Months Ended
Dec. 31, 2020
Risks and Uncertainties [Abstract]  
Schedule of revenue, Net
   Years Ended
December 31,
 
(in thousands)  2020   2019 
Bedding  $598,046   $401,499 
Other   50,425    26,859 
Total revenue, net  $648,471   $428,358