Condensed Consolidated Statements of Cash Flows Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income (loss) including noncontrolling interests in operating subsidiaries	$ (12,121)	$ (9,897)
Adjustments to reconcile net loss including noncontrolling interests in operating subsidiaries to net cash provided by operating activities:
Depreciation and amortization	5,540	10,803
Non-cash stock compensation	2,128	1,735
Other	(348)	69
Changes in assets and liabilities:
Restricted cash	(3)	(798)
Accounts receivable	18,969	8,325
Prepaid expenses and other assets	(1,738)	(134)
Accounts payable and accrued expenses	(2,576)	(2,733)
Royalties and contingent legal fees payable	(10,830)	3,740
Net cash provided by operating activities	(979)	11,110
Cash flows from investing activities:
Purchase of available-for-sale investments	(174,152)	0
Maturities and sale of available-for-sale investments	102,682	0
Patent portfolio investment costs	0	(1,000)
Advances to Investee	(1,000)	0
Purchases of property and equipment	0	(4)
Net cash provided by (used in) investing activities	(72,470)	(1,004)
Cash flows from financing activities:
Repurchased Restricted Common Stock	25	0
Proceeds from exercises of stock options	255	0
Net cash used in financing activities	230	0
Increase (decrease) in cash and cash equivalents	(73,219)	10,106
Cash and cash equivalents, beginning	127,540	135,223
Cash and cash equivalents, ending	$ 54,321	$ 145,329