Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities
Net loss	$ (24,675)	$ (13,784)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of patent portfolio	7,354	134
Non-cash registration rights penalty	654
Fair value adjustments for warrant liabilities	(47)	2,610
Depreciation		24
Stock-based compensation	11,954	7,402
Issuance of common stock - financial advisor	225
Changes in assets and liabilities:
Other receivables		4
Prepaid expenses and other assets	83	60
Security deposits	4
Accounts payable and accrued expenses	(125)	(171)
Accrued salaries and benefits	(194)
Net cash used in activities of continuing operations	(4,767)	(3,721)
Net cash provided by (used in) activities of discontinued operations		82
Net cash used in operating activities	(4,767)	(3,639)
Cash flow from investing activities
Cash acquired in acquisition of North South		2,684
Purchase of patent portfolio		(2,002)
Purchase of property and equipment	(4)
Payment of accrued patent costs	(1,000)
Net cash (used in) provided by investing activities	(1,004)	682
Cash flow from financing activities
Proceeds from issuance of common stock and warrants, net	3,874
Proceeds from issuance of note payable		500
Proceeds from issuance of preferred stock, net	18,387	500
Redemption of redeemable Series I	(14,065)
Net cash provided by financing activities	8,196	1,000
Net decrease in cash and cash equivalents	2,425	(1,957)
Cash and cash equivalents, beginning of year	3,125	4,498
Cash and cash equivalents, end of year	5,550	2,541
Cash paid for interest and taxes
Non-cash investing and financing activities
Retirement of treasury stock	201
Conversion of preferred stock to common stock	3
Issuance of Series C Convertible Preferred Stock in connection with exchange of warrants		$ 5,696