Note 1 - Basis of Presentation (Details Textual)	Mar. 31, 2017
Number of Wholly Owned Subsidiary	1
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