Condensed Consolidated Statements of Cash Flows Statement - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss) including noncontrolling interests in operating subsidiaries	$ 131,984,000	$ (43,922,000)
Adjustments to reconcile net loss including noncontrolling interests in operating subsidiaries to net cash provided by operating activities:
Gain on Conversion of Loan and Accrued Interest	(2,671,000)	0
Gain on exercise of warrant	4,616,000	0
Change in fair value of investment, net	(146,281,000)	0
Depreciation and amortization	16,780,000	28,105,000
Non-cash stock compensation	13,068,000	5,754,000
Impairment of Intangible Assets (Excluding Goodwill)	2,248,000	40,165,000
Other	(473,000)	(81,000)
Changes in assets and liabilities:
Restricted cash	11,512,000	(3,316,000)
Accounts receivable	26,450,000	(20,200,000)
Prepaid expenses and other assets	(874,000)	1,191,000
Accounts payable and accrued expenses	(6,608,000)	5,392,000
Royalties and contingent legal fees payable	5,916,000	10,131,000
Net cash provided by operating activities	46,435,000	23,219,000
Cash flows from investing activities:
Payments to Acquire Other Investments	(31,514,000)	0
Advances to Investee	(4,000,000)	(10,000,000)
Purchase of available-for-sale investments	(424,945,000)	(62,633,000)
Maturities and sale of available-for-sale investments	386,920,000	32,352,000
Patent portfolio investment costs	0	(1,000,000)
Purchases of property and equipment	0	(4,000)
Net cash provided by (used in) investing activities	(73,539,000)	(41,285,000)
Cash flows from financing activities:
Repurchased Restricted Common Stock	35,000	25,000
Payments to Noncontrolling Interests	0	1,358,000
Proceeds from exercises of stock options	680,000	242,000
Net cash used in financing activities	645,000	(1,141,000)
Increase (decrease) in cash and cash equivalents	(26,459,000)	(19,207,000)
Cash and cash equivalents, beginning	127,540,000	135,223,000
Cash and cash equivalents, ending	101,081,000	116,016,000
Other Noncash Income (Expense)	$ 23,061,000	$ 0