CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
Issuance of debt, original issue discount	$ 0	$ 1.7

Represents the initial purchasers' discount related to the debt instrument.

No definition available.

Name:	rtsx_DebtInstrumentInitialPurchasersDiscount
Namespace Prefix:	rtsx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration