XML 44 R31.htm IDEA: XBRL DOCUMENT
v3.23.2

Stock-Based Compensation (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Weighted Average Assumptions | The weighted average assumptions used in the Black-Scholes model for option grants to employees and directors are presented below:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Risk-free interest rate | 3.45% |  | 2.90% |  | 4.05% |  | 2.04%
Expected volatility | 101% |  | 95% |  | 100% |  | 94%
Expected life in years | 5.6 |  | 5.7 |  | 5.5 |  | 5.7
Dividend yield | — |  | — |  | — |  | —

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration