Summary of Significant Accounting Policies (Details) Adult in Millions	6 Months Ended
Jun. 30, 2017 Adult
Summary of Significant Accounting Policies [Abstract]
Number of adults affected by OAB	40

Refers to the number of adults who are affected by a chronic medical condition.

No definition available.

Name:	cgnt_ChronicConditionNumberOfAdultsAffected
Namespace Prefix:	cgnt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration