Accrued License And Milestone Fees

No definition available.

Name:	glyc_AccruedLicenseAndMilestoneFees
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Additional milestones fees.

+ References

No definition available.

+ Details

Name:	glyc_AdditionalMilestonesFees
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum milestone payment upon achievement of specified development milestone.

+ References

No definition available.

+ Details

Name:	glyc_MaximumMilestonePaymentUponAchievementOfSpecifiedDevelopmentMilestone
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum milestone payment upon achievement of specified levels of annual net sales of licensed products.

+ References

No definition available.

+ Details

Name:	glyc_MaximumMilestonePaymentUponAchievementOfSpecifiedLevelsOfAnnualNetSalesOfLicensedProducts
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Maximum milestone payment upon achievement of specified regulatory milestone.

+ References

No definition available.

+ Details

Name:	glyc_MaximumMilestonePaymentUponAchievementOfSpecifiedRegulatoryMilestone
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Milestone payment amount receivable.

+ References

No definition available.

+ Details

Name:	glyc_MilestonePaymentAmountReceivable
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Non Refundable Payment Received

+ References

No definition available.

+ Details

Name:	glyc_NonRefundablePaymentReceived
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Payments for research and development expenses, under research services agreement.

+ References

No definition available.

+ Details

Name:	glyc_PaymentsForResearchAndDevelopmentExpensesUnderResearchServicesAgreement
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Payments made on execution of milestone agreement.

+ References

No definition available.

+ Details

Name:	glyc_PaymentsMadeOnExecutionOfMilestoneAgreement
Namespace Prefix:	glyc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of obligation payable for all future milestone and royalty payments received.

+ References

No definition available.

+ Details

Name:	glyc_PercentageOfObligationPayableForAllFutureMilestoneAndRoyaltyPaymentsReceived
Namespace Prefix:	glyc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Upfront payment recognition period.

+ References

No definition available.

+ Details

Name:	glyc_UpfrontPaymentRecognitionPeriod
Namespace Prefix:	glyc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_LicensesRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_ResearchAndDevelopmentArrangementContractToPerformForOthersLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=glyc_PfizerLicenseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Research and License Agreements - Additional Information (Detail) (USD $)	1 Months Ended			3 Months Ended		18 Months Ended
	Feb. 28, 2015	May 31, 2014	Oct. 31, 2011	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2014
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Accrued license and milestone fees							$ 1,500,000glyc_AccruedLicenseAndMilestoneFees
Accrued liability Paid for Research Agreement	1,500,000
Pfizer License Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Potential milestone payments upon the achievement of specified development milestones			115,000,000
Potential milestone payments upon the achievement of specified regulatory milestones			70,000,000
Potential milestone payments upon the achievement specified levels of annual net sales of licensed products			135,000,000
Payment made on execution of milestone agreement			22,500,000
Period of up-front payment				1 year 6 months
Amount received and recognized as revenue				0	0
Amount of milestone payment		20,000,000
Percentage of obligations payable for all future milestone and royalty payments received with respect to rivipansel				10.00%
Accrued license and milestone fees							1,500,000
Non-refundable payment against milestone payment		15,000,000
Additional milestones fees				0
Pfizer License Agreement [Member] \| Up-Front Payment Arrangement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]
Amount received and recognized as revenue						$ 22,500,000