CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows from Operating Activities:
Net cash used in operating activities	$ (5,840)	$ (6,481)
Cash Flows from Investing Activities:
Proceeds from sales of and distributions from companies	4,194	2,192
Acquisitions of ownership interests in companies	(17,073)	(14,129)
Advances and loans to companies	(7,119)	(8,338)
Repayment of advances and loans to companies	28	28
Increase in marketable securities	0	(9,337)
Decrease in marketable securities	26,602	8,815
Capital expenditures	(22)	(110)
Net cash provided by (used in) investing activities	6,610	(20,879)
Cash Flows from Financing Activities:
Issuance of Company common stock, net	0	549
Repurchase of Company common stock	(5,445)	0
Net cash provided by (used in) financing activities	(5,445)	549
Net change in cash and cash equivalents	(4,675)	(26,811)
Cash and cash equivalents at beginning of period	32,838	111,897
Cash and cash equivalents at end of period	$ 28,163	$ 85,086