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Composition of Certain Balance Sheet Items (Other Accrued Liabilities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Condensed Balance Sheet Statements, Captions [Line Items]    
Government rebates $ 8,209 $ 11,132
Accrued compensation 12,331 7,879
Legal fees 1,087 314
Income taxes payable 472 1,542
Accrued selling and marketing costs 491 261
Professional fees 367 240
Accrued manufacturing costs 33 2,032
Other 279 386
Total accrued and other liabilities 23,269 $ 23,786
Deposits for clinical trials    
Condensed Balance Sheet Statements, Captions [Line Items]    
Other $ 3,300