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Other Assets (Narrative) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Goodwill [Line Items]      
HBU real estate not expected to be sold within next 12 months $ 77,400,000ryn_OtherAssetsTimberlandHBUHeldforuse $ 68,200,000ryn_OtherAssetsTimberlandHBUHeldforuse  
Goodwill 9,694,000us-gaap_Goodwill 10,179,000us-gaap_Goodwill 0us-gaap_Goodwill
Time period proceeds from LKE sale maintained with third party intermediary 180 days    
Capitalized debt issuance costs 3,700,000us-gaap_UnamortizedDebtIssuanceExpense 7,000,000us-gaap_UnamortizedDebtIssuanceExpense  
Software Cost, Amortization Period 5 years    
Capitalized computer software costs 4,200,000us-gaap_CapitalizedComputerSoftwareNet 8,000,000us-gaap_CapitalizedComputerSoftwareNet  
Reported Value Measurement [Member]      
Goodwill [Line Items]      
Restricted cash 6,688,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 [1] 68,944,000us-gaap_RestrictedCashAndCashEquivalents
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember		 [1]  
Matariki Forestry Group [Member] | New Zealand Timber [Member]      
Goodwill [Line Items]      
Goodwill $ 9,700,000us-gaap_Goodwill
/ dei_LegalEntityAxis
= ryn_MatarikiForestryGroupMember
/ us-gaap_StatementBusinessSegmentsAxis
= ryn_NewZealandTimberSegmentMember		    
[1] Restricted cash is recorded in “Other Assets” and represents the proceeds from LKE sales deposited with a third-party intermediary.