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Stockholders' Equity - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Apr. 30, 2023	Sep. 30, 2022	Jul. 29, 2022
Corporate Share Repurchase
Stock repurchase program, authorized amount					$ 50,000,000
Shares repurchased in period		$ 0	$ 0
At-The Market Equity Offering
Corporate Share Repurchase
Sale of stock, authorized offering amount						$ 100,000,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Weighted-average grant date fair value per share of stock options (in USD per share)		$ 36.65	$ 28.90	$ 80.08
Intrinsic value of options exercised		$ 12,000,000	$ 4,600,000	$ 77,300,000
Cash received from options exercised		$ 22,200,000	$ 2,600,000	$ 33,000,000
2002 Stock Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award
Number of shares authorized (in shares)							300,000
2002 Stock Incentive Plan | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Increase the number of shares under the 2002 Stock Incentive Plan (in shares)	1,000,000
Shares available for future option grants (in shares)		1,000,000
Unrecognized compensation cost		$ 26,200,000
Weighted-average period in which cost is expected to be recognized (in years)		2 years 6 months
2002 Stock Incentive Plan | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award
Weighted-average period in which cost is expected to be recognized (in years)		1 year 7 months 6 days
Unrecognized compensation cost, restricted stock		$ 15,200,000
Omniab Separation | Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award
Unrecognized compensation cost		$ 1,100,000
Weighted-average period in which cost is expected to be recognized (in years)		10 months 24 days
Omniab Separation | Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award
Weighted-average period in which cost is expected to be recognized (in years)		1 month 6 days
Unrecognized compensation cost, restricted stock		$ 100,000
Amended ESPP
Share-based Compensation Arrangement by Share-based Payment Award
Shares available for future option grants (in shares)		30,801
Employee Stock Purchase Plan
Shares allowed to purchase in employee stock purchase plan per employee (in shares)		1,250
Proportion of fair market value of common stock at which stock is purchased under ESPP (as a percent)		85.00%
Initial Offering Period		6 months
Common stock issued under amended ESSP (in shares)		5,080	8,479	8,448

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