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Schedule of Participating Mortgage Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Net Investment Income [Line Items] |  |
Total | $ 715,702 | $ 668,032
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member] |  |
Net Investment Income [Line Items] |  |
Total | 697,484 | 639,875
Federal Home Loan Bank Certificates and Obligations (FHLB) [Member] |  |
Net Investment Income [Line Items] |  |
Total | $ 18,218 | $ 28,157

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- Definition Amount of contractual principal due at origination of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column F -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column F)) -URI http://asc.fasb.org/extlink&oid=120402547&loc=d3e617274-123014 + Details
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