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Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) customer	Dec. 31, 2019 USD ($) customer	Dec. 31, 2018 USD ($) customer	May 01, 2020 USD ($)	Apr. 30, 2020 USD ($)	May 01, 2019 USD ($)	Apr. 30, 2019 USD ($)	Oct. 31, 2015 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Investments impariment charges	$ 0	$ 0	$ 0
Long-lived assets impairment charges	0
Short-term restriced cash	$ 800,000
Long-term restriced cash				$ 3,500,000	$ 4,000,000.0	$ 4,000,000.0	$ 4,500,000	$ 4,500,000
Service period	1 year
Sales Revenue, Net [Member] | Gene Company Limited [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of individual customers | customer	1	1	1
Concentration risk, percentage	14.00%	17.00%	26.00%
Accounts Receivable [Member] | Gene Company Limited [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	12.00%	11.00%
Accounts Receivable [Member] | Domestic Customers [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	43.00%	55.00%
Accounts Receivable [Member] | Berry Genomics Co., Ltd and Gene Company Limited [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of individual customers | customer	2
Accounts Receivable [Member] | Berry Genomics Co., Ltd [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage	15.00%
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred service revenue, performance period	1 year
Minimum [Member] | Computer Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	2 years
Minimum [Member] | Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	3 years
Minimum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	3 years
Minimum [Member] | Lab Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	3 years
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Deferred service revenue, performance period	3 years
Maximum [Member] | Computer Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	3 years
Maximum [Member] | Software [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	5 years
Maximum [Member] | Furniture and Fixtures [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	7 years
Maximum [Member] | Lab Equipment [Member]
Summary Of Significant Accounting Policies [Line Items]
Property and equipment estimated useful life	5 years
Customer Deposit [Member]
Summary Of Significant Accounting Policies [Line Items]
Short-term restriced cash	$ 500,000
Security Deposit [Member]
Summary Of Significant Accounting Policies [Line Items]
Short-term restriced cash	$ 300,000

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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