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REVENUE RECOGNITION (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Jun. 30, 2021
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2020
Product Sales              
Product sales provisions $ 16,200   $ 5,900 $ 31,800   $ 14,100  
Minimum estimate product return (as a percent) 2.00%     2.00%      
Maximum estimate product return (as a percent) 3.00%     3.00%      
Revenues $ 4,258   11,688 $ 8,377   13,438  
Royalty revenues              
Product Sales              
Revenues 295   205 525   205  
Allowance For Sales Returns              
Product Sales              
Revenue reserve accrual 7,600     7,600     $ 5,800
Foamix              
Product Sales              
Proceeds from royalties   $ 4,000 $ 6,000   $ 10,000    
Upfront royalty receipt 0         $ 10,000  
Additional royalty upon receipt of marketing approval in China $ 1,000     $ 1,000      
Customers | Revenue from Contract with Customer, Product and Service Benchmark | Four Customers              
Product Sales              
Concentration risk, percentage 56.00%     70.00%      
Customers | Revenue from Contract with Customer, Product and Service Benchmark | Three Customers              
Product Sales              
Concentration risk, percentage     100.00%     99.00%