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Stockholders' Equity (Narrative) (Details) $ / shares in Units, $ in Thousands				1 Months Ended		12 Months Ended
	Nov. 22, 2021 shares	Sep. 20, 2021 USD ($) item $ / shares shares	Apr. 21, 2021 shares	Nov. 30, 2020 USD ($) $ / shares shares	Aug. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2021 USD ($) item $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($) shares	Dec. 02, 2020 shares	Aug. 04, 2020 shares	Oct. 31, 2010 $ / shares
Stockholders' Equity [Line Items]
Common stock, dividends declared | $ / shares						$ 0
Voting right of common stock share holders						one
Voting right of common stock share holders, number of votes | item						1
Proceeds from issuance of common stock from underwritten public equity offerings, net of issuance costs | $						$ 294,845	$ 187,479
Stock-based compensation cost capitalized in inventory | $						$ 900	$ 300
Common Stock Shares Issued						220,978,000	192,294,000
Proceeds From Issuance Of Common Stock | $						$ 31,806	$ 46,360	$ 8,548
Weighted average grant date fair value per share | $ / shares						$ 18.36	$ 4.14
Common Stock Par Or Stated Value Per Share | $ / shares						$ 0.001	$ 0.001					$ 0.001
Private Placement of Common Stock [Member]
Stockholders' Equity [Line Items]
Price per share | $ / shares		$ 26.75
Common Stock Shares Issued		11,214,953
Proceeds From Issuance Of Common Stock | $		$ 300,000
Common Stock [Member]
Stockholders' Equity [Line Items]
Shares issued							29,356,000
Weighted average remaining contractual life						5 years 1 month 13 days
Omniome Plan [Member]
Stockholders' Equity [Line Items]
Exchange ratio | item		0.259204639
Shares authorized		2,494,128
2010 Plan [Member]
Stockholders' Equity [Line Items]
Common stock remain available for issuance						21,500,000
ESPP [Member]
Stockholders' Equity [Line Items]
Common stock remain available for issuance						7,810,673
Percentage of outstanding common stock used to determine annual plan increase						2.00%
Number of purchase periods | item						4
Purchase period of ESPP						6 months
Percentage of fair market value at which stock can be purchased						85.00%
Common stock purchased under plan						1,913,968	834,677		1,306,329
Cash received from option exercises | $						$ 6,400	$ 2,400		$ 2,700
Common Stock Shares Issued						4,000,000
2020 Equity Incentive Plan [Member]
Stockholders' Equity [Line Items]
Shares authorized											11,000,000
2020 Inducement Equity Incentive Plan [Member]
Stockholders' Equity [Line Items]
Shares authorized										2,500,000
Additional common stock reserved for issuance	360,000		750,000
Common stock remain available for issuance						8,100,000
Underwritten Public Equity Offering [Member]
Stockholders' Equity [Line Items]
Shares issued						29,400,000
Proceeds from issuance of common stock from underwritten public equity offerings, net of issuance costs | $						$ 187,200
Number of offerings | item						2
Price per share | $ / shares						$ 6.40
Underwriting Agreement [Member]
Stockholders' Equity [Line Items]
Public offering				6,096,112	19,430,000
Common stock offering price per share | $ / shares				$ 14.25	$ 4.47
Public offering, option to purchase additional shares, period				30 days	30 days
Public offering, option to purchase additional shares, shares				914,416	2,914,500
Shares issued				7,000,000.0	22,300,000
Commissions, percentage of gross proceeds				6.00%	6.00%
Proceeds from issuance of common stock from underwritten public equity offerings, net of issuance costs | $				$ 93,900	$ 93,900
Offering costs | $				$ 300	$ 300
Common Stock Par Or Stated Value Per Share | $ / shares				$ 0.001	$ 0.001
Options to purchase common stock [Member]
Stockholders' Equity [Line Items]
Options expired						20,000.00
Aggregate intrinsic value outstanding | $						$ 147,900
Aggregate intrinsic value exercisable options | $						$ 121,400
Stock price | $ / shares							$ 20.46
Vested and expected to vest, outstanding						11,535,217
Vested and expected to vest, aggregate intrinsic value | $						$ 141,900
Vested and expected to vest, weighted average exercise price | $ / shares						$ 10.46
Vested and expected to vest, weighted average remaining contractual life						6 years 3 months 10 days
Total intrinsic value of options exercised | $						$ 146,100	$ 63,100		2,600
Unrecognized compensation costs | $						122,900
Cash received from option exercises | $						$ 25,400	$ 43,900		$ 5,900
Weighted average grant date fair value per share | $ / shares						$ 15.53	$ 7.20
Options to purchase common stock [Member] | Common Stock [Member]
Stockholders' Equity [Line Items]
Weighted average remaining contractual life						2 years 10 months 24 days
Options to purchase common stock [Member] | $1.16 – 20.90 [Member]
Stockholders' Equity [Line Items]
Options expired, weighted average exercise price | $ / shares						$ 9.80
RSUs with time-based vesting [Member]
Stockholders' Equity [Line Items]
Ratio of number of shares into which the share instrument may be converted						1
Vesting period						4 years
Share-based Compensation Award, Tranche One, Two, Three and Four [Member] | RSUs with time-based vesting [Member]
Stockholders' Equity [Line Items]
Vesting percentage						25.00%

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