Share-Based Compensation Arrangement By Share-Based Payment Award, Grant Date Fair Value

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Threshold, Percentage

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of noncash expense for share-based payment arrangement.

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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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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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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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

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Stock-Based Compensation - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation			$ 5,279,344	$ 8,806,188
Total unrecognized compensation cost related to unvested stock options	$ 2,800,000		$ 2,800,000
Period over which total unrecognized compensation cost related to unvested stock options will be recognized (in years)			1 year 6 months
Weighted average grant date fair value (in dollars per share)	$ 7.96	$ 5.04	$ 7.01	$ 11.28
Threshold, percentage			150.00%
Service-Based Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to unvested stock options	$ 2,600,000		$ 2,600,000
Period over which total unrecognized compensation cost related to unvested stock options will be recognized (in years)			1 year 8 months 12 days
Weighted average grant date fair value, restricted stock units (in dollars per share)	$ 9.97	$ 6.36	$ 8.68	$ 10.32
Performance-and market-based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares outstanding (in shares)	83,800		83,800
Threshold, percentage			100.00%
Milestone-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	$ 0		$ 0
Weighted average grant date fair value, restricted stock units (in dollars per share)			$ 10.96
Vesting percentage			70.00%
Grant date fair value			$ 629,000
Market-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	18,000		$ 26,000
Weighted average grant date fair value, restricted stock units (in dollars per share)			$ 10.69
Vesting percentage			30.00%
Award vesting period (in years)			3 years
Grant date fair value			$ 269,000
Market-Based RSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			0.00%
Market-Based RSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			150.00%
Total Stockholders Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold, percentage			50.00%
Employees and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	1,200,000	$ 1,900,000	$ 5,100,000	$ 8,300,000
Employees and Directors \| Research and Development Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	581,000	846,000	2,200,000	3,500,000
Employees and Directors \| General and Administrative Expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	619,000	1,100,000	2,900,000	4,800,000
Non Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash stock-based compensation	$ 40,000	$ 153,000	$ 186,000	$ 519,000