Commitment and Contingencies (Details) - Adimab Option Agreement $ in Thousands	1 Months Ended
Feb. 28, 2017 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Option Fee	$ 250
Milestone payments	$ 25,000

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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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration