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Borrowings (Repurchase Agreements) (Details) (Securities Sold under Agreements to Repurchase [Member], USD $) In Thousands, unless otherwise specified |  |  | 3 Months Ended
--- | --- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014 Due date: 12 3 2014 [Member] | Mar. 31, 2014 Due date: 6 13 2015 [Member] | Mar. 31, 2014 Due date: 12 8 2016 [Member] | Mar. 31, 2014 Due date: 3 2 2017 [Member]
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing Balance | $ 1,010,000 | $ 1,265,000 | $ 85,000 | $ 255,000 | $ 170,000 | $ 500,000
Weighted Average Coupon | 2.89% |  | 0.675% | 0.84% | 1.50% | 4.78%
Settlement Date |  |  | Dec. 03, 2012 | Dec. 10, 2012 | Dec. 06, 2012 | Mar. 02, 2007
Investment Repurchase Agreement, Repurchase Date |  |  | Dec. 03, 2014 | Jun. 13, 2015 | Dec. 08, 2016 | Mar. 02, 2017

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- Definition Date the repurchase agreement was made. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Footnote 2 + Details
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- Definition Date the repurchase will be made. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Footnote 2 + Details
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- Definition Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, collateralized financings, and capital lease obligations. + References No definition available. + Details
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- Details
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- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
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