Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash Flows from Operating Activities:
Net income (loss)	$ (14,263)	$ 27,004
Adjustments to reconcile to net cash used in operating activities:
Amortization of right of use asset	271	229
Equity (income) loss, net	6,985	(11,846)
Impairments of ownership interests and advances	0	2,521
Gain from observable price changes	(553)	(8,505)
Gain from sales of ownership interests	0	(35,284)
Change in fair value of ownership interests	3,689	19,255
Other, net	76	(22)
Stock-based compensation, including liability classified awards	1,445	1,779
Changes in assets and liabilities:
Prepaid expenses and other current assets	(534)	(238)
Accounts payable, accrued expenses, and other current liabilities	(374)	(3,045)
Net cash used in operating activities	(3,258)	(8,152)
Cash Flows from Investing Activities:
Proceeds from sales and distributions from ownership interests	6,879	60,832
Advances and loans to ownership interests	(5,670)	(2,718)
Purchase of marketable securities	(11,871)	0
Proceeds, from sales and maturities in marketable securities	6,000	0
Net cash (used in) provided by investing activities	(4,662)	58,114
Cash Flows from Financing Activities:
Repurchases of common stock	(2,939)	(40,655)
Tax withholdings related to equity-based awards	(549)	(144)
Net cash used in financing activities	(3,488)	(40,799)
Net change in cash, cash equivalents and restricted cash	(11,408)	9,163
Cash, cash equivalents and restricted cash equivalents at beginning of period	24,764	15,601
Cash, cash equivalents and restricted cash at end of period	$ 13,356	$ 24,764