Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash Flows from Operating Activities:
Net (loss)	$ (9,828)	$ (14,263)
Adjustments to reconcile to net cash used in operating activities:
Amortization of right of use asset	319	271
Equity (income) loss, net	6,085	6,985
Impairments of ownership interests and advances	1,173	0
Gain from observable price changes	(1,661)	(553)
Gain from sales of ownership interests	(542)	0
Change in fair value of ownership interests	0	3,689
Other, net	(7)	76
Stock-based compensation, including liability classified awards	1,121	1,445
Changes in assets and liabilities:
Prepaid expenses and other current assets	(146)	(534)
Accounts payable, accrued expenses, and other current liabilities	178	(374)
Net cash used in operating activities	(3,308)	(3,258)
Cash Flows from Investing Activities:
Acquisitions of ownership interests	(3,000)	0
Proceeds from sales and distributions from ownership interests	2,851	6,879
Advances and loans to ownership interests	(250)	(5,670)
Purchase of marketable securities	(8,530)	(11,871)
Proceeds from sales and maturities in marketable securities	14,650	6,000
Net cash provided by (used in) investing activities	5,721	(4,662)
Cash Flows from Financing Activities:
Payment of dividend	(5,819)	0
Repurchases of common stock	(75)	(2,939)
Tax withholdings related to equity-based awards	(358)	(549)
Net cash used in financing activities	(6,252)	(3,488)
Net change in cash, cash equivalents and restricted cash	(3,839)	(11,408)
Cash, cash equivalents and restricted cash equivalents at beginning of year	13,356	24,764
Cash, cash equivalents and restricted cash at end of year	$ 9,517	$ 13,356