Sale of Royalties (Details)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
SWK Purchase Agreement \| SWK Funding LLC
Debt Instrument [Line Items]
Royalty revenue, percent received upon milestone payment	10.00%	10.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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