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Repurchase Agreements (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
REPURCHASE AGREEMENTS [Abstract] |  |  |
Repurchase Agreements, Maturities | P93D | P114D |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | $ 3,485,544 |  | $ 3,580,754
Repurchage agreement, Weighted Average Interest Rate | 0.59% |  | 0.61%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 3,814,355 |  | 3,890,066
Deferred Costs | (139) |  | (243)
Bonds [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 16,692 |  | 20,651
Repurchage agreement, Weighted Average Interest Rate | 1.52% |  | 1.59%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 18,607 |  | 19,686
Residential Mortgage Backed Securities [Member] | Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 2,350,781 |  | 2,522,503
Repurchage agreement, Weighted Average Interest Rate | 0.39% |  | 0.42%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 2,421,202 |  | 2,598,158
Residential Mortgage Backed Securities [Member] | Non-Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 11,905 |  | 10,569
Repurchage agreement, Weighted Average Interest Rate | 1.77% |  | 1.80%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 14,691 |  | 12,746
Commercial Mortgage Backed Securities [Member] | Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 265,475 |  | 246,849
Repurchage agreement, Weighted Average Interest Rate | 0.37% |  | 0.39%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 330,182 |  | 306,318
Commercial Mortgage Backed Securities [Member] | Non-Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 309,398 |  | 303,674
Repurchage agreement, Weighted Average Interest Rate | 1.22% |  | 1.27%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 371,273 |  | 367,859
CMBS IO [Member] | Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 382,327 |  | 369,948
Repurchage agreement, Weighted Average Interest Rate | 1.14% |  | 1.16%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | 471,173 |  | 449,072
CMBS IO [Member] | Non-Agency MBS [Member] |  |  |
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items] |  |  |
Repurchase agreement, balance | 149,105 |  | 106,803
Repurchage agreement, Weighted Average Interest Rate | 1.23% |  | 1.27%
Pledged Financial Instruments, Not Separately Reported, Mortgage-Related Securities Available-for-sale or Held-for-investment | $ 187,227 |  | $ 136,227

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- Definition The carrying amount as of the date of the latest financial statement presented of mortgage-related securities classified as available for sale or held for investment which are owned but transferred to another party to serve as collateral to partially or fully secure a debt obligation, repurchase agreement or other current or potential obligation, and for which the transferee does not have the right by contract or custom to sell or re-pledge them to an unrelated party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1)(i) -URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729 + Details
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- Definition This describes the time frame of the terms of the entity's repurchase agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)(i)(A)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729 + Details
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