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DERIVATIVE FINANCIAL INSTRUMENTS: (Details) In Millions, unless otherwise specified |  | 3 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2011 USD ($) | Jun. 30, 2011 Interest rate swap USD ($) | Mar. 31, 2011 Cash Flow Hedges Interest rate swap USD ($) | Mar. 31, 2012 Cash Flow Hedges Forward foreign currency contracts CAD
Derivative financial instruments |  |  |  |
Total variable rate debt outstanding prior to repayments | $ 85.0 |  |  |
Notional amount of interest rate derivatives before debt repayment |  |  | 40.0 |
Remaining variable rate debt, outstanding amount | 45.0 |  |  |
Aggregate loss on settlement of derivative |  | 0.1 |  |
Amount of hedged item (in Canadian dollars) |  |  |  | 0.6

X
- Definition Represents the total outstanding amount of variable rate debt not swapped as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the aggregate gain (loss) on the settlement of derivative instruments terminated prior to maturity date. + References No definition available. + Details
Name: | rgs_GainLossOnEarlySettlementOfDerivativeInstrumentRecognizedInIncome
Namespace Prefix: | rgs_
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X
- Definition The portion of the carrying amount of long-term borrowings outstanding prior to repayments made during the period, including current maturities, which accrued interest at a rate subject to change from time to time. + References No definition available. + Details
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Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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X
- Definition Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges, prior to termination or maturity during the period in conjunction with repayments of the hedged debt. Notional amount refers to the monetary amount specified in the interest rate derivative contract. + References No definition available. + Details
Name: | rgs_NotionalAmountOfInterestRateCashFlowHedgeDerivativesBeforeRepayment
Namespace Prefix: | rgs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of the hedged item as of the balance sheet date related to the derivative. For example, the hedged balance on a debt instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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X
- Details
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