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v2.4.1.9

Components of Net Deferred Tax Asset (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Deferred tax assets: |  |
Net operating loss carryforwards | $ 699,997 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | $ 653,896 us-gaap_DeferredTaxAssetsOperatingLossCarryforwards
Research and development credits | 73,227 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch | 70,091 us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch
Capitalized research | 28,516 mnkd_DeferredTaxAssetsCapitalizedResearchExpenses | 30,421 mnkd_DeferredTaxAssetsCapitalizedResearchExpenses
Payments from collaboration | 19,217 us-gaap_DeferredTaxAssetsDeferredIncome |
Milestone Rights | 5,321 mnkd_DeferredTaxAssetsMilestoneRights | 6,608 mnkd_DeferredTaxAssetsMilestoneRights
Accrued expenses | 768 us-gaap_DeferredTaxAssetsTaxDeferredExpense | 3,578 us-gaap_DeferredTaxAssetsTaxDeferredExpense
Non-qualified stock option expense | 43,691 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 41,219 us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
Capitalized patent costs | 8,624 mnkd_DeferredTaxAssetsCapitalizedCosts | 7,811 mnkd_DeferredTaxAssetsCapitalizedCosts
Other | 131 us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther | 837 us-gaap_DeferredTaxAssetsTaxDeferredExpenseOther
Depreciation | 3,010 us-gaap_DeferredTaxAssetsOther | 2,539 us-gaap_DeferredTaxAssetsOther
Total net deferred tax assets | 882,502 us-gaap_DeferredTaxAssetsGross | 817,000 us-gaap_DeferredTaxAssetsGross
Valuation allowance | (882,502)us-gaap_DeferredTaxAssetsValuationAllowance | (817,000)us-gaap_DeferredTaxAssetsValuationAllowance
Net deferred tax assets | $ 0 us-gaap_DeferredTaxAssetsNet | $ 0 us-gaap_DeferredTaxAssetsNet

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