H&N ACQUISITION 10K (Details) (H and N [Member], USD $) In Millions, except Per Share data, unless otherwise specified		12 Months Ended
Mar. 31, 2014	Dec. 31, 2013 Subsequent Event [Member]	Dec. 31, 2013 Minimum [Member] Subsequent Event [Member]	Dec. 31, 2013 Maximum [Member] Subsequent Event [Member]
Business Acquisition [Line Items]
Amount of outstanding shares purchased	$ 2.0	$ 2.0
Amount payable through promissory note	$ 3.3	$ 3.3
Annual interest rate			1.00%	5.00%
Promissory note expiration date		2015
Number of trading days		30 days
Shares of common stock			$ 6.00	$ 12.00
Additional increase in annual interest rate after January 2016		10.00%
Period of employment contract		5 years

Refers to Additional increase in annual interest rate after January 2016.

No definition available.

Name:	ribt_AdditionalIncreaseInAnnualInterestRateAfterJanuary2016
Namespace Prefix:	ribt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Refers to Amount payable through promissory note.

No definition available.

Name:	ribt_AmountPayableThroughPromissoryNote
Namespace Prefix:	ribt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of outstanding shares purchased.

No definition available.

Name:	ribt_BusinessAcquisitionOutstandingSharesPurchased
Namespace Prefix:	ribt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents to annual interest to be paid on promissory note.

No definition available.

Name:	ribt_BusinessCombinationAnnualInterestRateOnPromissoryNote
Namespace Prefix:	ribt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

The number of trading days considered in delivery of shares.

No definition available.

Period of employment contract with former chief executive officer and founder.

No definition available.

Name:	ribt_PeriodOfEmploymentContract
Namespace Prefix:	ribt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

This line represents promissory note expiration date.

No definition available.

Name:	ribt_PromissoryNoteExpirationDate
Namespace Prefix:	ribt_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	instant

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

For an acquired entity, price of a single share of a number of saleable stocks of a company.

No definition available.

Name:	us-gaap_BusinessAcquisitionSharePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant