Equity Method Investments and Membership Interests in Joint Ventures (Schedule of Equity Method Investments) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	$ 15,403	$ 71,783
Advances to (distributions from) affiliates, net	9,575	(4,583)
Equity in comprehensive income (loss)	(7,711)	10,428
Sale of Equity investment		(62,225)
Ending Balance	17,267	15,403
Knight Hawk
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		56,085
Advances to (distributions from) affiliates, net		(7,886)
Equity in comprehensive income (loss)		14,026
Sale of Equity investment		(62,225)
DTA
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	15,403	15,698
Advances to (distributions from) affiliates, net	9,575	3,303
Equity in comprehensive income (loss)	(7,711)	(3,598)
Ending Balance	$ 17,267	$ 15,403

Amount of gain (loss) on sale or disposal of an equity method investment.

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