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Retirement Plans - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract] |  |
Maximum percentage of eligible compensation matched by employer | 5.00% |
Employer contributions to retirement plans | $ 1.0 | $ 690,000

X
- Definition Defined contribution plan contributions by employer. + References No definition available. + Details
Name: | eypt_DefinedContributionPlanContributionsByEmployer
Namespace Prefix: | eypt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration