Annual report pursuant to Section 13 and 15(d)

REVENUES - Activity (Details)

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REVENUES - Activity (Details) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance $ 1,636,000
Provision related to current period sales 8,133,000 2,722,000
Credit or payments made during the period (6,437,000) (1,086,000)
Balance 3,332,000 1,636,000
Discounts and allowances 9,300,000 3,000,000
Other accrued liabilities 6,721,000 3,598,000
Accounts receivable and prepaid and other current assets    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Provision related to current period sales 1,200,000 285,000
Chargebacks, Discounts and Fees    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance 623,000
Provision related to current period sales 5,170,000 1,484,000
Credit or payments made during the period (4,500,000) (861,000)
Balance 1,293,000 623,000
Government and Other Rebates    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance 843,000
Provision related to current period sales 2,864,000 1,068,000
Credit or payments made during the period (1,906,000) (225,000)
Balance 1,801,000 843,000
Returns    
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]    
Balance 170,000
Provision related to current period sales 99,000 170,000
Credit or payments made during the period (31,000)  
Balance $ 238,000 $ 170,000