v3.19.1

Basis of Presentation and Significant Accounting Policies - Schedule of Reconciliation of Beginning and Ending Level 3 Liabilities (Details) - Unobservable Inputs Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Balance - January 1,	$ 263	$ 569
Change in fair value of warrants potentially settleable in cash (Note 9)	(100)	(21)
Balance at March 31,	$ 163	$ 548

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- Definition

Change in fair value of warrants potentially settleable in cash.

+ References

No definition available.

+ Details

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Namespace Prefix:	COCP_
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Balance Type:	debit
Period Type:	duration

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
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