Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities:
Net cash used in operating activities	$ (2,551)	$ (5,782)
Cash Flows from Investing Activities:
Proceeds from sales of and distributions from ownership interests	708	41,778
Acquisitions of ownership interest	(1,000)
Advances and loans	(1,241)	(3,925)
Purchases of marketable securities		(57,243)
Proceeds from sales and maturities in marketable securities		62,235
Net cash (used in) provided by investing activities	(1,533)	42,845
Cash Flows from Financing Activities:
Tax withholdings related to equity-based awards	(11)	(149)
Net cash used in financing activities	(11)	(149)
Net change in cash, cash equivalents and restricted cash	(4,095)	36,914
Cash, cash equivalents and restricted cash at beginning of period	25,053	8,203
Cash, cash equivalents and restricted cash at end of period	$ 20,958	$ 45,117

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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