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Interest Expense - Schedule of Components of Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Debt securities: |  |
Interest expense | $ 50,810 | $ 84,062
Financing Liabilities [Member] |  |
Debt securities: |  |
Interest expense | 24,244 | 52,969
Match Funded Liabilties [Member] |  |
Debt securities: |  |
Interest expense | 9,549 | 12,849
Other Secured Borrowings [Member] |  |
Debt securities: |  |
Interest expense | 8,188 | 9,548
Senior Notes [Member] |  |
Debt securities: |  |
Interest expense | 7,452 | 7,456
Other [Member] |  |
Debt securities: |  |
Interest expense | 1,377 | 1,240
NRZ [Member] | Financing Liabilities [Member] |  |
Debt securities: |  |
Interest expense | 23,050 | 51,158
Other Financing Liabilities [Member] | Financing Liabilities [Member] |  |
Debt securities: |  |
Interest expense | $ 1,194 | $ 1,811

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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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