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Commitments and Contingencies (Details) - USD ($)
$ in Millions
9 Months Ended
Feb. 11, 2019
Sep. 30, 2020
Dec. 31, 2019
Halston Heritage Trademarks      
Commitments and Contingencies      
Contingent consideration $ 6.0    
Earn-out liability recorded   $ 0.9 $ 0.9
COVID19      
Commitments and Contingencies      
Additional allowance for doubtful accounts   $ 1.0