Summary of Significant Accounting Policies (Equity-Based Compensation, Taxes, Derivatives) (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of annual REIT taxable income intended to be distributed to stockholders	100.00%
REIT income tax expense	$ 0
Deferred income tax expense (benefit)	0
Valuation allowance decrease	$ 27,800,000
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of restricted share units (RSUs)		3 years

Represents the percentage of annual REIT taxable income that the entity intends to distribute to its stockholders.

No definition available.

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- Definition

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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

Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.

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