Accelerated Share Repurchases, Authorized Amount

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- Definition

Accelerated Share Repurchases, Shares Received

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- Definition

Fair Value Adjustment On Accelerated Share Repurchases

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Rights, Number Of Milestones

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No definition available.

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Rights, Number Of Milestones Required To Be Met

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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Fair Value Assumptions, Expected Achievement Rate

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- Definition

The price paid per share to immediately purchase the targeted number of shares on the date of executing the accelerated share repurchase agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 25
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653

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- Definition

Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

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- Definition

The cash outflow to reacquire common stock during the period.

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Percentage of vesting of award under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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Common Stock and Stock-Based Compensation - Narrative (Details)		3 Months Ended	9 Months Ended		12 Months Ended	17 Months Ended	59 Months Ended
	Sep. 24, 2020 USD ($) $ / shares shares	Mar. 31, 2021 milestone $ / shares shares	Sep. 30, 2021 USD ($) shares	Sep. 30, 2020 USD ($) shares	Dec. 31, 2020 USD ($)	Mar. 17, 2020 USD ($)	Jun. 30, 2021 USD ($) shares	Sep. 23, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments to repurchase stock			$ 12,568,000	$ 27,999,000
Award vesting period			4 years
Volatility			56.07%	54.98%
Expected term			5 years 8 months 4 days	6 years 10 days
Expected dividend yield			0.00%	0.00%
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expired (in shares) \| shares		97,750	97,750	11,431
Granted (in shares) \| shares			159,000	0
Risk-free interest rate		0.18%
Volatility		44.00%
Expected term		3 years
Expected dividend yield		0.00%
PSUs \| S&P Biotechnology
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares		99,500,000
Weighted average grant date fair value (in dollars per share) \| $ / shares		$ 71.09
Milestone PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares) \| shares		59,500
Weighted average grant date fair value (in dollars per share) \| $ / shares		$ 49.32
Number of milestones \| milestone		3
Number of milestones required to be met \| milestone		1
Expiration period		3 years
Expected achievement rate		0.00%
Milestone PSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target number granted		0.00%
Milestone PSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target number granted		200.00%
Share Repurchase Programs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments to repurchase stock							$ 219,500,000
Shares of common stock repurchased (in shares) \| shares							3,941,541
March 2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount						$ 160,000,000
Accelerated share repurchases, authorized amount								$ 25,000,000
Accelerated share repurchases, payment	$ 25,000,000
Accelerated share repurchases, shares received (in shares) \| shares	550,623
Accelerated share repurchases, initial price paid per share (in dollars per share) \| $ / shares	$ 45.40
Fair value adjustments related to derivative instrument					$ 3,000,000
October 2018 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Payments to repurchase stock						$ 68,000,000