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BeiGene Exclusive Option and License Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Deferred revenue - current
Balance at December 31, 2020	$ 1,500
Total contract liabilities
Additions	3,000
Revenue recognized	(1,500)
Contract liabilities	$ 1,500

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Amount of increase in obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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