Note 7 - Fair Value of Financial Instruments (Details)	Mar. 31, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Adverse Changes in Key Assumptions	10.00%frbk_AdverseChangesInKeyAssumptions	20.00%frbk_AdverseChangesInKeyAssumptions

Refers to the sensitivity of the current fair value of the SBA loan servicing rights to immediate adverse changes in key assumptions.

No definition available.

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Namespace Prefix:	frbk_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant