Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Accrued Liabilities and Other Long-Term Liabilities) (Details)

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Significant Accounting Policies (Accrued Liabilities and Other Long-Term Liabilities) (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Accrued Liabilities    
Compensation $ 854 $ 1,711
Professional fees 754 726
Amounts owed to former licensees 695 915
Royalties owed to third parties 937 823
Other 429 1,222
Total accrued liabilities 3,669 5,397
Other Long-Term Liabilities    
Deposits 298 268
Deferred rent 107 0
Other 41 29
Total other long-term liabilities $ 446 $ 297