Federal Home Loan Bank of Seattle

CIK:0001329701|SEC Filings
v2.4.1.9
Investment Classification and Assessment for OTTI (OTTI Reclassified from AOCI to Earnings) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Schedule of OTTI reclassified from AOCI to earnings [Line Items]    
Non-credit portion of OTTI losses recognized in AOCI on PLMBS reclassified from HTM to AFS $ 10,912us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsReclassificationAdjustmentOfNoncreditPortionFromHeldtomaturityToAvailableforsaleSecuritiesBeforeTax [1] $ 0us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsReclassificationAdjustmentOfNoncreditPortionFromHeldtomaturityToAvailableforsaleSecuritiesBeforeTax
Total amount of OTTI reclassified from AOCI to earnings 51,529us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet 3us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
PLMBS [Member]    
Schedule of OTTI reclassified from AOCI to earnings [Line Items]    
OTTI charges recognized in AOCI on PLMBS previously classified as AFS 34,385fhlbsea_OtherThanTemporaryImpairmentPreviouslyRecognizedNonCreditPortionAvailableForSaleSecurities
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
 
Non-credit portion of OTTI losses recognized in AOCI on PLMBS reclassified from HTM to AFS 10,912us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsReclassificationAdjustmentOfNoncreditPortionFromHeldtomaturityToAvailableforsaleSecuritiesBeforeTax
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
 
Change in fair value of OTTI securities recognized in OCI on date of reclassification for PLMBS reclassified from HTM to AFS (6,844)fhlbsea_OtherThanTemporaryImpairmentFairValueAdjustmentSecuritiesTransferredfromHeldtoMaturitytoAvailableforSale
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
 
Gross unrealized losses recognized in AOCI for PLMBS reclassified from HTM to AFS 13,076fhlbsea_OtherThanTemporaryImpairmentGrossUnrealizedLossesonSecuritiesTransferredfromHeldToMaturityToAvailableForSale
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
 
Total amount of OTTI reclassified from AOCI to earnings $ 51,529us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet
/ us-gaap_DebtSecurityAxis
= us-gaap_MortgageBackedSecuritiesIssuedByPrivateEnterprisesMember
 
[1] HTM OTTI charges recognized in AOCI were transferred to AFS OTTI charges recognized in AOCI.