CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (9,681)us-gaap_NetIncomeLoss	$ (5,164)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	22us-gaap_Depreciation	4us-gaap_Depreciation
Stock based compensation	1,348us-gaap_ShareBasedCompensation	553us-gaap_ShareBasedCompensation
Common stock issued in exchange for intellectual property	0	608
Changes in operating assets and liabilities:
Prepaid expenses	(953)	(126)
Accounts payable	502	635
Accrued interest	0	0
Accrued expenses	(289)	(572)
Deferred rent payable, long term	(2)	(2)
Net cash used in operating activities	(9,053)	(4,064)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of furniture and fixtures	0	(2)
Net cash used in investing activities	0	(2)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of warrants	0us-gaap_ProceedsFromWarrantExercises	4,758us-gaap_ProceedsFromWarrantExercises
Proceeds, net of expenses of $2,061 and $2,824 from sale of common stock	29,054	40,654
Net cash provided by financing activities	29,054	45,412
Effect of currency rate change on cash	(4)us-gaap_EffectOfExchangeRateOnCash	(1)us-gaap_EffectOfExchangeRateOnCash
Net increase in cash	19,997us-gaap_CashPeriodIncreaseDecrease	41,345us-gaap_CashPeriodIncreaseDecrease
Cash, beginning of the period	38,184us-gaap_Cash	8,202us-gaap_Cash
Cash, end of period	58,181us-gaap_Cash	49,547us-gaap_Cash
Noncash financing activities:
Issuances of common stock under employee benefit plan	$ 70	$ 0

The fair value of common stock issued during the period for the exchange of intellectual property.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow associated with the amount received from holders to acquire the entity's shares under incentive and share awards other than stock option exercises. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The cash inflow associated with the amount received from holders exercising their stock warrants.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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