Number of investments in foreign entities.

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- Definition

Number of investments in real estate entities.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

The amount of assets reported by an equity method investment of 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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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

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Investments in Affiliates - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) Investment	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Investments In And Advances To Affiliates [Line Items]
Number of Investments in Foreign Entities \| Investment	13
Number of Investments in Real Estate Entities \| Investment	4
Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 316,418	$ 312,102	$ 123,562
Joint Venture Unconsolidated [Member] \| Texas [Member]
Investments In And Advances To Affiliates [Line Items]
Equity Method Investments	13,100	16,300	24,600
Other Affiliates [Member] \| Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	316,400
Equity Method Investments	81,034	$ 84,354	$ 38,682
Variable Interest Entity, Not Primary Beneficiary [Member] \| Joint Venture Unconsolidated [Member] \| Asphalt Terminal Entity [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 23,900
Minimum [Member] \| Foreign Affiliates [Member] \| Joint Venture Unconsolidated [Member] \| Equity Method Investment Directly Owned [Member]
Investments In And Advances To Affiliates [Line Items]
Ownership percentage	25.00%
Minimum [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| Real Estate Entities [Member] \| Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 300
Minimum [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| Foreign Affiliates [Member] \| Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 200
Maximum [Member] \| Foreign Affiliates [Member] \| Joint Venture Unconsolidated [Member] \| Equity Method Investment Indirectly Owned [Member]
Investments In And Advances To Affiliates [Line Items]
Ownership percentage	50.00%
Maximum [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| Real Estate Entities [Member] \| Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 53,700
Maximum [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member] \| Foreign Affiliates [Member] \| Joint Venture Unconsolidated [Member]
Investments In And Advances To Affiliates [Line Items]
Total assets	$ 71,000