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PENSION AND POST RETIREMENT BENEFIT PLANS (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Components of net periodic pension benefit Gain | ||
| Interest and service cost | $ 2,250rol_DefinedBenefitPlanInterestAndServiceCost | $ 2,375rol_DefinedBenefitPlanInterestAndServiceCost |
| Expected return on plan assets | (3,197)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets | (3,108)us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets |
| Amortization of net loss | 940us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses | 610us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses |
| Net periodic loss/(benefit) | $ (7)us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost | $ (123)us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost |
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- Definition
Defined Benefit Plan Interest and Service Cost No definition available.
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- Definition
The amount of gains or losses recognized in net periodic benefit cost. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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