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REVENUE RECOGNITION (Details) - USD ($)
3 Months Ended 9 Months Ended
Apr. 23, 2020
Sep. 30, 2020
Jun. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Product Sales            
Product sales provisions   $ 11,000,000.0     $ 25,100,000  
Minimum estimate product return (as a percent)   2.00%     2.00%  
Maximum estimate product return (as a percent)   3.00%     3.00%  
Revenues   $ 3,269,000   $ 0 $ 16,707,000 $ 308,000
Royalty revenues            
Product Sales            
Revenues   406,000   $ 0 611,000 $ 308,000
Allowance For Sales Returns            
Product Sales            
Revenue reserve accrual   5,600,000     5,600,000  
Foamix            
Product Sales            
Proceeds from royalties $ 10,000,000.0 4,000,000.0 $ 6,000,000.0      
Upfront royalty receipt   $ 0     $ 10,000,000.0  
Additional royalty upon receipt of marketing approval in China $ 1,000,000.0          
Customers | Revenue from Contract with Customer, Product and Service Benchmark | Distributor One            
Product Sales            
Concentration risk, percentage   41.00%     43.00%  
Customers | Revenue from Contract with Customer, Product and Service Benchmark | Distributor Two            
Product Sales            
Concentration risk, percentage   43.00%     41.00%  
Customers | Revenue from Contract with Customer, Product and Service Benchmark | Distributor Three            
Product Sales            
Concentration risk, percentage   16.00%     15.00%