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Secured Debt Arrangements, Net - Summary of Outstanding Balances, Maximum and Average Balances of Borrowings (Details) - Line of Credit [Member] $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | $ 1,897,077
Amortized Cost of Collateral | 3,197,900
JP Morgan Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 728,638
Amortized Cost of Collateral | 1,374,235
Maximum Month-End Balance | 1,000,854
Average Month-End Balance | 885,203
DB Repurchase Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 570,642
Amortized Cost of Collateral | 921,424
Maximum Month-End Balance | 707,405
Average Month-End Balance | 524,727
Goldman Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 210,072
Amortized Cost of Collateral | 362,577
Maximum Month-End Balance | 261,691
Average Month-End Balance | 176,145
HSBC Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 48,835
Amortized Cost of Collateral | 69,433
Maximum Month-End Balance | 49,896
Average Month-End Balance | 49,107
USD | CS Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 187,117
Amortized Cost of Collateral | 254,064
Maximum Month-End Balance | 189,839
Average Month-End Balance | 109,453
GBP | CS Facility [Member] |
Line of Credit Facility [Line Items] |
Securities sold under agreements to repurchase, gross | 151,773
Amortized Cost of Collateral | 216,167
Maximum Month-End Balance | 151,915
Average Month-End Balance | $ 147,651

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- Definition Maximum month-end amount borrowed under the credit facility during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, before effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313 + Details
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