Additional lease property area covered.

No definition available.

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Namespace Prefix:	eypt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Additional subleased property office area.

+ References

No definition available.

+ Details

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Namespace Prefix:	eypt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- 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.

+ References

No definition available.

+ Details

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Namespace Prefix:	eypt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Its represent the construction allowance credit.

+ References

No definition available.

+ Details

Name:	eypt_ConstructionAllowanceCredit
Namespace Prefix:	eypt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Lease inception date.

+ References

No definition available.

+ Details

Name:	eypt_LeaseInceptionDate
Namespace Prefix:	eypt_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease property area covered.

+ References

No definition available.

+ Details

Name:	eypt_LeasePropertyAreaCovered
Namespace Prefix:	eypt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Lease property office area covered.

+ References

No definition available.

+ Details

Name:	eypt_LeasePropertyOfficeAreaCovered
Namespace Prefix:	eypt_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of renewal options.

+ References

No definition available.

+ Details

Name:	eypt_NumberOfRenewalOptions
Namespace Prefix:	eypt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Operating lease renewal term percentage of market rent at renewal date.

+ References

No definition available.

+ Details

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Namespace Prefix:	eypt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_LeaseExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

+ Details

Name:	us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8,17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=eypt_LibertyCornerOfficeSpaceMember
Namespace Prefix:
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Balance Type:
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- Details

Name:	srt_CounterpartyNameAxis=eypt_CaladriusMember
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Balance Type:
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- Details

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- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=eypt_SecondAmendmentLeaseMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LeaseArrangementTypeAxis=eypt_OriginalLeaseMember
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Commitments and Contingencies - Additional Information (Detail)		6 Months Ended	12 Months Ended
	Jun. 11, 2018 ft²	Dec. 31, 2018 USD ($) ft² Tranches	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Commitments and Contingencies [Line Items]
Rent expense related to real estate and other operating leases charged to operations \| $		$ 374,000	$ 508,000	$ 442,000	$ 485,000
Liberty Corner Office Space [Member]
Commitments and Contingencies [Line Items]
Number of renewal options \| Tranches		2
Caladrius [Member]
Commitments and Contingencies [Line Items]
Additional subleased area of office space	1,381
Massachusetts [Member] \| Maximum [Member]
Commitments and Contingencies [Line Items]
Construction allowance \| $		$ 670,750
Massachusetts [Member] \| Second Amendment [Member]
Commitments and Contingencies [Line Items]
Lease term expiration date		May 31, 2025
Lease commencement date		Sep. 10, 2018
Additional Space leased		6,590
Additional lease renewal option period		5 years
Irrevocable standby letter of credit \| $		$ 150,000
Massachusetts [Member] \| Original Lease [Member]
Commitments and Contingencies [Line Items]
Area of leased office and laboratory space		13,650
Original lease term		5 years
Lease term expiration date		Apr. 30, 2019
New Jersey [Member] \| Liberty Corner Office Space [Member]
Commitments and Contingencies [Line Items]
Lease term expiration date		Jun. 30, 2022
Lease commencement date		Jul. 01, 2017
Additional lease renewal option period		5 years
Area of leased office space		3,000
Lease renewal rate at 95% of market rent at time of renewal		95.00%