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Commitments and Contingencies (Details)
1 Months Ended
Mar. 30, 2017
subsidiary
Mar. 24, 2017
officer
Jul. 31, 2017
officer
suit
David Buehring Case      
Loss Contingencies [Line Items]      
Number of defendants   2  
Gardner Case      
Loss Contingencies [Line Items]      
Number of defendants     2
New claims filed | suit     3
Mattress Firm Case      
Loss Contingencies [Line Items]      
Number of defendants | subsidiary 2