CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY [Parenthetical]	12 Months Ended
Dec. 31, 2011	Dec. 31, 2009
Conversion of Class A common stock to Class D common stock, shares	76,486
Common Stock Class A
Repurchase of common stock, shares	54,566	34,889
Common Stock Class D
Repurchase of common stock, shares	4,245,567	27,691,398

Change in the number of shares due to a conversion of stock from one class to another during the period. Conversion may be among classes of common or nonredeemable preferred stock or from common stock or nonredeemable preferred stock to nonredeemable preferred stock or common stock, respectively.

No definition available.

Name:	roia_StockConvertedFromOneClassToAnotherClassChangesShares
Namespace Prefix:	roia_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration