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Senior note holders are paid off in full before any payments are made to junior note holders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 15 Senior Notes, Fair Value 2 us-gaap_DebtInstrumentFairValue us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 323633000 323633 false false false 2 false true false false 325398000 325398 false false false xbrli:monetaryItemType monetary Estimated fair value of the debt instrument at the balance-sheet date. 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Senior note holders are paid off in full before any payments are made to junior note holders. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 false 26 Senior Notes, Fair Value 2 us-gaap_DebtInstrumentFairValue us-gaap true credit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 283074000 283074 false false false 2 false true false false 282105000 282105 false false false xbrli:monetaryItemType monetary Estimated fair value of the debt instrument at the balance-sheet date. 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