Basis of Presentation (Details)	Sep. 30, 2014 Security Subsidiary
Basis of Presentation [Abstract]
Number of unconsolidated subsidiaries	3
Number of trust preferred securities issued	3

Number of trust preferred securities issued by the entity.

No definition available.

Name:	frbk_NumberOfTrustPreferredSecuritiesIssued
Namespace Prefix:	frbk_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant