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Mortgage Loans on Real Estate (Narrative) (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) portfolio_segment loans | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) loans
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Number of portfolio segments that make up financing receivables | portfolio_segment | 1 |  |
Allowance for credit loss, economic factors forecast period, years | 2 years |  |
Real estate owned | $ 0 | $ 0 |
Impaired mortgage loans, workout terms, interest only payments, six month terms | 6 months |  |
Impaired mortgage loans, workout terms, interest only payments, twelve month terms | 12 months |  |
Impaired mortgage loans, workout terms, cash flow sweep, number of months | 12 months |  |
Interest income recognized on non-accrual loans | $ 0 | $ 0 |
Financing receivable, modifications, period of time of delaying principal and/or interest, months | 3 months |  |
Minimum |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Number of days past due, delinquent status | 60 days |  |
Number of days past due, non-accrual status | 90 days |  |
Commercial Real Estate Portfolio Segment |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |
Commitments outstanding | $ 247,500 |  |
Non-accrual loans | $ 0 |  | $ 0
Number of TDRs | loans | 0 |  | 0

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- Definition Number of days past due for loans to be considered delinquent. + References No definition available. + Details
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- Definition Number of years economic factors are forecasted. + References No definition available. + Details
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- Definition Financing receivable, modifications, period of time of delaying principal and / or interest. + References No definition available. + Details
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- Definition The number of portfolio segments which make up financing receivables. + References No definition available. + Details
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- Definition Circumstances in which borrowers pay a protion of their loan payment into an escrow account that can be used for capital and tenant improvements of a period not more than 12 months. + References No definition available. + Details
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- Definition Number of days past due for loans to be placed on non-accrual status. + References No definition available. + Details
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- Definition Amount of undisbursed portion of financing receivable balance. Excludes financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5066-111524 + Details
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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5162-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4437-111522 + Details
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