Number Of States In Which Property Is Located

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Number of Real Estate Properties To Be Sold Or Rebranded

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Real Estate Investment Property And Real Estate Held-for-sale, At Cost

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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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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Cost of the investment.

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Balance held at close of period in number of shares.

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Amount of unrealized gain (loss) on investment in marketable security.

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity.

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Fair Value of Assets and Liabilities - Recurring and Non-Recurring (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) state property shares	Mar. 31, 2019 USD ($)	Mar. 12, 2020 state
Fair Value of Assets and Liabilities
Number of properties to be sold or rebranded \| property	6
Number of states in which property is located \| state	6
Carrying value of properties held for sale	$ 56,688
Aggregate undepreciated carrying value of real estate	11,501,576
Loss on asset impairment	16,740	$ 0
Travel Centers of America LLC
Fair Value of Assets and Liabilities
Unrealized gain (loss) on equity securities	$ 5,045	$ 1,197
Net Lease Property
Fair Value of Assets and Liabilities
Number of properties to be sold or rebranded \| property	6
Number of states in which property is located \| state	5		2
Carrying value of properties held for sale	$ 56,688
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Travel Centers of America LLC
Fair Value of Assets and Liabilities
Shares included in investment securities (in shares) \| shares	684,000
Historical cost of securities	$ 17,407
Recurring \| Carrying amount \| Travel Centers of America LLC
Fair Value of Assets and Liabilities
Investment securities	6,686
Recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Travel Centers of America LLC
Fair Value of Assets and Liabilities
Investment securities	6,686
Recurring \| Significant Other Observable Inputs (Level 2) \| Travel Centers of America LLC
Fair Value of Assets and Liabilities
Investment securities	0
Recurring \| Significant Unobservable Inputs (Level 3) \| Travel Centers of America LLC
Fair Value of Assets and Liabilities
Investment securities	0
Non-recurring \| Carrying amount
Fair Value of Assets and Liabilities
Investment securities	56,688
Non-recurring \| Net Lease Property
Fair Value of Assets and Liabilities
Loss on asset impairment	13,230
Non-recurring \| Held-to-maturity Securities
Fair Value of Assets and Liabilities
Loss on asset impairment	3,510
Non-recurring \| Held-to-maturity Securities \| Carrying amount
Fair Value of Assets and Liabilities
Investment securities	368
Non-recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value of Assets and Liabilities
Investment securities	0
Non-recurring \| Quoted Prices in Active Markets for Identical Assets (Level 1) \| Held-to-maturity Securities
Fair Value of Assets and Liabilities
Investment securities	0
Non-recurring \| Significant Other Observable Inputs (Level 2)
Fair Value of Assets and Liabilities
Investment securities	56,688
Non-recurring \| Significant Other Observable Inputs (Level 2) \| Held-to-maturity Securities
Fair Value of Assets and Liabilities
Investment securities	0
Non-recurring \| Significant Unobservable Inputs (Level 3)
Fair Value of Assets and Liabilities
Investment securities	0
Non-recurring \| Significant Unobservable Inputs (Level 3) \| Held-to-maturity Securities
Fair Value of Assets and Liabilities
Investment securities	$ 368