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Federal orphan drug credits expiration start year.

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Operating loss carryforwards expiration end year.

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Operating loss carryforwards expiration start year.

No definition available.

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Tax credit carryforward, expiration end year.

No definition available.

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Tax credit carryforward, expiration start year.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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MERRIMACK PHARMACEUTICALS INC 10-K