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Commitments and Contingencies - Unfunded Commitments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Percentage of capital committed that may be drawn down	100.00%
Other Commitments [Line Items]
Performance-Based Commitments	$ 394,758
Strategic Investments	33,304
Total	428,062
Loans and Other Lending Investments
Other Commitments [Line Items]
Performance-Based Commitments	385,215
Strategic Investments	0
Total	385,215
Real Estate
Other Commitments [Line Items]
Performance-Based Commitments	9,543
Strategic Investments	0
Total	9,543
Other Investments
Other Commitments [Line Items]
Performance-Based Commitments	0
Strategic Investments	33,304
Total	33,304
Loan Participations Payable
Other Commitments [Line Items]
Performance-Based Commitments	$ 24,900

X

- Definition

Represents the off-balance sheet maximum other commitments of the entity.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Represents the percentage of capital committed to strategic investments by the entity that may be drawn down.

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No definition available.

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X

- Definition

Represents the off-balance sheet unfunded maximum amount of funds for construction and development loans and build-outs of space in net lease assets over a period of time if and when the borrowers and tenants meet established milestones and other performance criteria.

+ References

No definition available.

+ Details

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- Definition

Represents certain off-balance sheet unfunded commitments of the entity.

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No definition available.

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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.

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No definition available.

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