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DERIVATIVE INSTRUMENTS: (Details Textual) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reassessed Estimated Fair Value of Award	$ 18.0roia_ReassessedEstimatedFairValueOfAward	$ 13.7roia_ReassessedEstimatedFairValueOfAward

X

- Definition

Represents the reassessed estimated fair value of award amount adjusted liability.

+ References

No definition available.

+ Details

Name:	roia_ReassessedEstimatedFairValueOfAward
Namespace Prefix:	roia_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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