Note 1 - Nature of Operations (Details)	Dec. 31, 2014
Disclosure Text Block [Abstract]
Number of Wholly Owned Subsidiary	1frbk_NumberOfWhollyOwnedSubsidiary
Number of Unconsolidated Subsidiaries	3frbk_NumberOfUnconsolidatedSubsidiaries
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