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Segment and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2020

Segment Reporting [Abstract]

Schedule of Revenue by Geographic Area

Geographic revenues, which are based on the bill-to region, are as follows (in thousands):

		Years Ended December 31,
		2020				2019				2018
Europe		$	67,161			$	132,400			$	112,916
Japan			36,660				122,475				100,002
China			72,498				1,700				—
All other			—				2				40
Total revenue		$	176,319			$	256,577			$	212,958

Schedule of Inventory by Geographic Area

Inventory by geographic location are as follows (in thousands):

		December 31,
		2020				2019
United States		$	4,715			$	—
China			11,815				6,887
Total inventory		$	16,530			$	6,887

Schedule of Long Lived Assets by Geographic Area

Property and equipment, net by geographic location are as follows (in thousands):

		December 31,
		2020				2019
United States		$	20,673			$	27,325
China			12,974				15,418
Total property and equipment		$	33,647			$	42,743

Summary of Finance and Operating Lease Right of Use Assets by Geographical Location

Finance lease right-of-use assets and operating lease right-of-use assets, net by geographic location are as follows (in thousands):

		December 31,
		2020				2019
United States		$	29,551			$	39,237
China			55				365
Total finance lease right-of-use assets		$	29,606			$	39,602
United States		$	47			$	75
China			1,996				1,856
Total operating lease right-of-use assets		$	2,043			$	1,931

Schedule of Customer Concentration by Collaboration Partners

The Company’s revenues to date have been generated from the following collaboration partners that respectively accounted for 10% or more of the Company’s total revenue and accounts receivable:

		Percentage of Revenue												Percentage of Accounts Receivable
		Years Ended December 31,												December 31,
		2020				2019				2018				2020				2019
Astellas—Related party			21	%			48	%			47	%			10	%			17	%
AstraZeneca			37	%			52	%			53	%			26	%			81	%

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Inventory by geographic areas.

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Tabular disclosure of long-lived assets, excluding financial instruments, long-term customer relationships of a financial institution, mortgage rights, deferred policy acquisition costs, and deferred tax assets, by geographic areas located in the entity's country of domicile and foreign countries in which the entity holds assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph b
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Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

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-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
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Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer.

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