Quarterly report pursuant to Section 13 or 15(d)

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Asset Acquisition And License Agreements (Details)

v3.4.0.3

Asset Acquisition And License Agreements (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2013
Merck \| CERC-301
Asset Acquisition And License Agreement [Line Items]
Total Cost of License Agreement		$ 1,500,000
Other Commitment		750,000
Merck \| CERC-301 \| Research and development expense
Asset Acquisition And License Agreement [Line Items]
Initial license acquisition payments		750,000
Merck \| COMT Inhibitor
Asset Acquisition And License Agreement [Line Items]
Initial license acquisition payments		200,000
Merck \| COMT Inhibitor \| Maximum \| Development Milestone Commitment
Asset Acquisition And License Agreement [Line Items]
Potential Additional Milestone Commitment		$ 6,200,000
Lilly \| CERC-501
Asset Acquisition And License Agreement [Line Items]
Term within execution of license agreement	30 days
Other Commitment	$ 250,000
Term of the study	9 months
Lilly \| CERC-501 \| Research and development expense
Asset Acquisition And License Agreement [Line Items]
Initial license acquisition payments	$ 750,000

- 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

Name:	cerc_AssetAcquisitionAndLicenseAgreementLineItems
Namespace Prefix:	cerc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The additional amount of milestone payments for which the entity may be liable under the conditions of the agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	cerc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Period of time over which the study is conducted.

+ References

No definition available.

+ Details

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Namespace Prefix:	cerc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents period within execution of license agreement.

+ References

No definition available.

+ Details

Name:	cerc_TimePeriodWithinExecutionOfLicenseAgremment
Namespace Prefix:	cerc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount that the entity may be liable to pay for the license agreement, including amounts paid at inception and amounts contingent on achievement of milestones.

+ References

No definition available.

+ Details

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Namespace Prefix:	cerc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

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Namespace Prefix:	us-gaap_
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- Details

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- Details

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Namespace Prefix:
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- Details

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