Equity Investments (Narrative) (Details) - USD ($) shares in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Carrying value	$ 11,697,000	$ 9,251,000
Long-term investments	$ 388,055,000	274,311,000
Tractor [Member]
Schedule of Equity Method Investments [Line Items]
Shares acquired	4,325
Ownership percentage	10.30%
Cash consideration	$ 10,000,000
Equity method investment, impairment	0	0
Carrying value	11,697,000	9,251,000
Tractor Warrants [Member]
Schedule of Equity Method Investments [Line Items]
Carrying value	$ 10,747,000	0
Number of shares that may be called by warrants	3,772
Nuro [Member]
Schedule of Equity Method Investments [Line Items]
Shares acquired	766
Recognized gain	$ 5,968,000
Long-term investments	15,968,000	15,968,000
Cultivate Fund [Member]
Schedule of Equity Method Investments [Line Items]
Carrying value	$ 6,140,000	$ 0

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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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

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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- Definition

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

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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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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