Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Summary of Significant Accounting Policies - Accrued Liabilities and Other Long-Term Liabilities (Details)

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Basis of Presentation and Summary of Significant Accounting Policies - Accrued Liabilities and Other Long-Term Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Accrued Liabilities    
Compensation $ 2,384 $ 4,045
Professional fees 1,022 942
Amounts owed to former licensees 427 428
Royalties owed to third parties 1,084 1,025
Payments due to broker for share repurchases 0 4,613
Return reserve 2,813 3,590
Restructuring 287 1,093
Current lease liabilities 1,187 0
Other 5,567 3,464
Total accrued liabilities $ 14,771 $ 19,200