CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
Royalty revenue from a related party, net of amortization for capitalized fees paid to a related party of $3,456 and $1,780 for the three months ended March 31, 2015 and 2014	$ 6,674thrx_RoyaltyRevenueFromRelatedPartyNet	$ (1,050)thrx_RoyaltyRevenueFromRelatedPartyNet
Revenue from collaborative arrangements from a related party, net	222thrx_CollaborativeArrangementsRevenue	270thrx_CollaborativeArrangementsRevenue
Total net revenue	6,896us-gaap_Revenues	(780)us-gaap_Revenues
Operating expenses:
Research and development	712us-gaap_ResearchAndDevelopmentExpense	2,687us-gaap_ResearchAndDevelopmentExpense
General and administrative	5,439us-gaap_GeneralAndAdministrativeExpense	11,256us-gaap_GeneralAndAdministrativeExpense
Total operating expenses	6,151us-gaap_OperatingExpenses	13,943us-gaap_OperatingExpenses
Income (loss) from operations	745us-gaap_OperatingIncomeLoss	(14,723)us-gaap_OperatingIncomeLoss
Other income (expense), net	1,178us-gaap_OtherNonoperatingIncomeExpense	(3)us-gaap_OtherNonoperatingIncomeExpense
Interest income	116us-gaap_InvestmentIncomeNet	188us-gaap_InvestmentIncomeNet
Interest expense	(12,706)us-gaap_InterestExpense	(1,644)us-gaap_InterestExpense
Loss from continuing operations	(10,667)	(16,182)
Loss from discontinued operations (Notes 1 and 11)	0	(51,521)
Net loss	$ (10,667)	$ (67,703)
Basic and diluted net loss per share:
Continuing operations	$ (0.09)	$ (0.15)
Discontinued operations	$ 0.00	$ (0.47)
Basic and diluted net loss per share	$ (0.09)us-gaap_EarningsPerShareBasicAndDiluted	$ (0.62)us-gaap_EarningsPerShareBasicAndDiluted
Cash dividends declared per common share	$ 0.25us-gaap_DividendsPayableAmountPerShare	$ 0.00us-gaap_DividendsPayableAmountPerShare
Shares used to compute basic and diluted net loss per share (in shares)	114,658	109,859

Revenue earned under collaborative arrangements from upfront payments and contingent payments.

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Represents revenue net of amortization expense for capitalized fees paid to a related party during the period from the leasing or otherwise lending to a related party the entity's rights or title to certain property. Royalty revenue is derived from a percentage or stated amount of sales proceeds or revenue generated by the third party using the entity's property. An example of property from which royalties may be derived includes patents.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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