Limit on Investments in Taxable Real Estate Investment Trusts, Percent

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Number of Investments

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- Definition

Requirement to Distribute Taxable Income, Percent

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Nominal or face amount used to calculate payment on derivative.

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The number of derivative instruments of a particular group held by the entity.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

The net gain (loss) recognized in earnings during the period due to the ineffectiveness on interest rate fair value hedges.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of interest capitalized, including amount of allowance for funds used during construction.

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Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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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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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies (Narrative) (Details)	2 Months Ended	3 Months Ended
	Mar. 31, 2020 USD ($) investment interestRateSwap	Mar. 31, 2020 USD ($) investment interestRateSwap	Mar. 31, 2019 USD ($)	Jan. 24, 2020 USD ($)	Dec. 31, 2019 USD ($)
Property, Plant and Equipment [Line Items]
Capitalized interest costs		$ 2,600,000	$ 900,000
Intangible lease assets, accumulated amortization	$ 60,794,000	60,794,000			$ 58,659,000
Goodwill	$ 63,806,000	63,806,000			0
Hedge ineffectiveness recognized in earnings		$ 0	0
Requirement to distribute taxable income (at least)	90.00%	90.00%
Limit on investments in taxable real estate investment trusts (percent)	20.00%	20.00%
Columbia Operating Partnership
Property, Plant and Equipment [Line Items]
General partner and majority owner, percentage		97.20%
Normandy Acquisition
Property, Plant and Equipment [Line Items]
Goodwill				$ 63,806,000
Real Estate Funds
Property, Plant and Equipment [Line Items]
Carrying Value of Investment	$ 3,800,000	$ 3,800,000
Unrealized loss on investments in real estate funds	$ 160,000
Real Estate Funds \| Normandy
Property, Plant and Equipment [Line Items]
Number of real estate funds \| investment	3	3
Minimum \| Real Estate Funds \| Normandy
Property, Plant and Equipment [Line Items]
Economic interest percentage		2.00%
Maximum \| Real Estate Funds \| Normandy
Property, Plant and Equipment [Line Items]
Economic interest percentage		2.50%
Building
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets		40 years
Building and site improvements \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets		5 years
Building and site improvements \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life of real estate assets		25 years
Corporate Joint Venture
Property, Plant and Equipment [Line Items]
Capitalized interest costs		$ 400,000	$ 300,000
Carrying Value of Investment	$ 1,087,694,000	$ 1,087,694,000			$ 1,054,460,000
Interest Rate Swap
Property, Plant and Equipment [Line Items]
Number of derivative instruments held \| interestRateSwap	2	2
Notional amount	$ 450,000,000.0	$ 450,000,000.0