Cash Flows Between Transferor and Transferee, Proceeds from New Transfers, Amount Funded

No definition available.

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- Definition

Loan Collateral

+ References

No definition available.

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- Definition

Loan Collateral, Measurement Input

+ References

No definition available.

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- Definition

Mortgage Loans on Real Estate, Commercial and Consumer, Percentage of Portfolio

+ References

No definition available.

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- Definition

Mortgage Loans on Real Estate, Impairment

+ References

No definition available.

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- Definition

Proceeds From Pre-payment Penalties

+ References

No definition available.

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- Definition

Provision For Loan And Lease Losses And Impairment

+ References

No definition available.

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- Definition

Qualitative and Quantitative Information, Transferor's Continuing Involvement, Arrangements of Financial Support, Amount Funded

+ References

No definition available.

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- Definition

Cash Flows between a transferor and a transferee attributable to newly transferred assets related to either a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=109247956&loc=d3e107207-111719

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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-Topic 310
-SubTopic 10
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-Subparagraph (SX 210.9-03.7)
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- Definition

The percentage points (also referred to as 'margin') added to the reference rate as stated in the loan agreement and used to compute the variable rate on the loans receivable. For instance, the loan agreement might state that the interest rate the borrower is obligated to pay is the London Interbank Offered Rate (LIBOR) plus three quarters (3/4) of a percentage point adjusted quarterly (each three months). LIBOR in this example is the index or reference rate, 3/4 percentage point is the margin, the reference rate plus the margin is the fully indexed rate. This element would be used to report separately the margin.

+ References

No definition available.

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- Definition

The balance represents the amount of loans that are secured by real estate mortgages, offset by the reserve to cover probable credit losses on the loan portfolio.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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- Definition

Interest paid other than in cash for example by issuing additional debt securities. As a noncash item, it is added to net income when calculating cash provided by or used in operations using the indirect method.

+ References

+ Details

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

The transferor's maximum amount of exposure to loss as a result of its continuing involvement in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)(4)(ii)
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Commercial Mortgage and Subordinate Loans, Net - Additional Information (Details)	3 Months Ended					12 Months Ended
	Mar. 31, 2019 USD ($) $ / ft²	Dec. 31, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2016 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of loan portfolio	100.00%					100.00%
Carrying value	$ 5,186,999,000	$ 4,927,593,000				$ 4,927,593,000
Payment in kind interest	14,500,000			$ 10,600,000
Proceeds from pre-payment penalties or accelerated fees	3,700,000			$ 0
Commercial Mortgage and Subordinated Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan loss provision and impairment	37,000,000					37,000,000
Amortized cost of the loan	5,186,999,000	4,927,593,000				4,927,593,000
Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Carrying value	4,003,089,000	3,878,981,000				3,878,981,000
Subordinate Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Carrying value	1,183,910,000	1,048,612,000				1,048,612,000
Retail Center - Cincinnati, OH [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses and impairment		15,000,000
Amortized cost of the loan	156,000,000	156,000,000				156,000,000
Residential Condominium - Bethesda, MD [Member] \| Commercial Mortgage and Subordinated Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan loss provision and impairment	10,000,000
Provision for loan losses and impairment			$ 5,000,000		$ 2,000,000
Amortized cost of the loan	24,200,000	27,200,000				27,200,000
Impairment					$ 3,000,000
Multifamily - Williston, ND [Member] \| Commercial Mortgage and Subordinated Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Amortized cost of the loan	32,100,000	32,400,000				$ 32,400,000
Multifamily - Williston, ND [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses and impairment							$ 10,000,000
Multifamily - Williston, ND [Member] \| Subordinate Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for loan losses and impairment							$ 5,000,000
Office Campus - Renton, WA [Member] \| Subordinate Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Proceeds from sale of loan	75,000,000
Proceeds from sale of loan, amount funded	17,700,000
Carrying value	265,000,000
Exposure to mortgage loan	190,000,000
Exposure to mortgage loan, amount funded	$ 96,100,000
Floating Rate Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Percentage of loan portfolio	93.00%					91.00%
Net operating income [Member] \| Retail Center - Cincinnati, OH [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral		$ 10,500,000				$ 10,500,000
Capitalization rate [Member] \| Retail Center - Cincinnati, OH [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral, measurement input			0.068
Dollars per square foot [Member] \| Residential Condominium - Bethesda, MD [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral, measurement input \| $ / ft²	662
Discount rate [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral, measurement input							0.10
Discount rate [Member] \| Residential Condominium - Bethesda, MD [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral, measurement input	0.15
Terminal capitalization rate [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loan collateral, measurement input							0.11
Contractual Interest Rate Reduction [Member] \| Retail Center - Cincinnati, OH [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance of loan restructured			$ 169,000,000
Contractual Interest Rate Reduction [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Retail Center - Cincinnati, OH [Member] \| Commercial Mortgage Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Basis spread on variable rate			3.00%	5.50%