XML 80 R63.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Pension Plans - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net settlement loss | $ 1,700 | $ 1,700 | $ 2,400
Minimum time period for expected rate of return | 10 years |  |
Maximum time period for expected rate of return | 20 years |  |
Accrued cost related to pension plans included in other long term liabilities | $ 31,600 | 34,800 |
Change in equity as a result of change in deferred net loss | 4,500 | 3,800 | 100
Change in equity as result of change in deferred net loss taxes | $ 1,500 | 0 | (100)
Pension Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Rate of qualified earnings credited to the account of the participant of benefit plan | 3.00% |  |
Retirement age benefit payable to a terminated vested participant upon retirement | 65 years |  |
Retirement age for benefit payments, earliest age allowed contingent of minimum service requirement | 55 years |  |
Number of years of service at the time plan was frozen for the eligibility of benefit payable to terminated vested participant at age 55 | 15 years |  |
Net settlement loss | $ 1,734 | 1,715 | $ 2,356
Expected contribution to defined benefit plan | 1,600 |  |
Net gain recognized in other comprehensive income | 4,500 | 3,800 |
Unrecognized actuarial losses included in other comprehensive loss, net of tax | 25,000 | 27,900 |
Unrecognized actuarial losses included in other comprehensive loss | 35,900 | $ 40,400 |
Defined benefit plan amounts that will be amortized from accumulated other comprehensive income loss in next fiscal year | 1,000 |  |
Non Qualified Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Accumulated benefit obligation for defined benefit plan | $ 15,100 |  |

X
- Definition Total accrued liability for the company's qualified and non-qualified pension plans. + References No definition available. + Details
Name: | rhp_AccruedCostRelatedToPensionPlans
Namespace Prefix: | rhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Increase or decrease in equity as a result of the change in deferred net loss. + References No definition available. + Details
Name: | rhp_ChangeInEquityAsResultOfChangeInDeferredNetLoss
Namespace Prefix: | rhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax effect of the change in equity as a result of the change in deferred net loss. + References No definition available. + Details
Name: | rhp_ChangeInEquityAsResultOfChangeInDeferredNetLossTaxes
Namespace Prefix: | rhp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maximum future years for which current portfolio asset allocations are evaluated for future returns. + References No definition available. + Details
Name: | rhp_MaximumTimePeriodForExpectedRateOfReturn
Namespace Prefix: | rhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum future years for which current portfolio asset allocations are evaluated for future returns. + References No definition available. + Details
Name: | rhp_MinimumTimePeriodForExpectedRateOfReturn
Namespace Prefix: | rhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period eligible for benefit to be paid to terminated vested participant. + References No definition available. + Details
Name: | rhp_PeriodEligibleForBenefitToBePaidToTerminatedVestedParticipant
Namespace Prefix: | rhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of qualified earnings credited to participants under the cash formula of the qualified retirement plan. + References No definition available. + Details
Name: | rhp_RateOfQualifiedEarningsCreditedToAccountOfParticipantOfBenefitPlan
Namespace Prefix: | rhp_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Retirement age for benefits under the qualified retirement plan after employee termination. + References No definition available. + Details
Name: | rhp_RetirementAgeForBenefitPayments
Namespace Prefix: | rhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Retirement age for benefits under the qualified retirement plan after employee termination if the employee had fifteen years of service. + References No definition available. + Details
Name: | rhp_RetirementAgeForBenefitPaymentsEarliestAgeContingentOfMinimumServiceRequirement
Namespace Prefix: | rhp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i-k) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
Name: | us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, after reclassification adjustment, of increase (decrease) in accumulated other comprehensive income from gain (loss) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e637-108580 + Details
Name: | us-gaap_DefinedBenefitPlanAmountsRecognizedInOtherComprehensiveIncomeLossNetGainLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (s) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedAmortizationNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(7) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=rhp_NonQualifiedPensionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |