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v2.4.1.9

Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating activities |  |  |
Net income (loss) | $ (38,313)us-gaap_NetIncomeLoss | $ (261)us-gaap_NetIncomeLoss | $ 8,362 us-gaap_NetIncomeLoss
Adjustments to reconcile net income (loss) to net cash used in operating activities: |  |  |
Depreciation expense | 1,822 us-gaap_Depreciation | 1,193 us-gaap_Depreciation | 960 us-gaap_Depreciation
Share-based compensation | 3,244 us-gaap_ShareBasedCompensation | 862 us-gaap_ShareBasedCompensation | 838 us-gaap_ShareBasedCompensation
Fair value adjustment of warrant liability |  | 626 us-gaap_FairValueAdjustmentOfWarrants | (151)us-gaap_FairValueAdjustmentOfWarrants
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (931)us-gaap_IncreaseDecreaseInAccountsReceivable | 42 us-gaap_IncreaseDecreaseInAccountsReceivable | 1,352 us-gaap_IncreaseDecreaseInAccountsReceivable
Prepaid expenses | (3,239)us-gaap_IncreaseDecreaseInPrepaidExpense | (834)us-gaap_IncreaseDecreaseInPrepaidExpense | (91)us-gaap_IncreaseDecreaseInPrepaidExpense
Restricted cash | 105 us-gaap_IncreaseDecreaseInRestrictedCashForOperatingActivities |  | 177 us-gaap_IncreaseDecreaseInRestrictedCashForOperatingActivities
Other assets | (1,179)us-gaap_IncreaseDecreaseInOtherOperatingAssets | (375)us-gaap_IncreaseDecreaseInOtherOperatingAssets | 1 us-gaap_IncreaseDecreaseInOtherOperatingAssets
Accounts payable | (1,500)us-gaap_IncreaseDecreaseInAccountsPayable | (570)us-gaap_IncreaseDecreaseInAccountsPayable | (7,312)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses | 4,346 us-gaap_IncreaseDecreaseInAccruedLiabilities | 2,347 us-gaap_IncreaseDecreaseInAccruedLiabilities | 185 us-gaap_IncreaseDecreaseInAccruedLiabilities
Lease exit liability | (1,439)us-gaap_IncreaseDecreaseInRestructuringReserve | (629)us-gaap_IncreaseDecreaseInRestructuringReserve | (534)us-gaap_IncreaseDecreaseInRestructuringReserve
Deferred revenue | 3,317 us-gaap_IncreaseDecreaseInDeferredRevenue | (16,676)us-gaap_IncreaseDecreaseInDeferredRevenue | (10,810)us-gaap_IncreaseDecreaseInDeferredRevenue
Deferred rent | (234)mgnx_IncreaseDecreaseInDeferredRent | 103 mgnx_IncreaseDecreaseInDeferredRent | 441 mgnx_IncreaseDecreaseInDeferredRent
Other liabilities | 1,242 us-gaap_IncreaseDecreaseInOtherCurrentLiabilities |  |
Net cash used in operating activities | (32,759)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (14,172)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (6,582)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities |  |  |
Purchases of property and equipment | (3,572)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (2,961)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (940)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Net cash used in investing activities | (3,572)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (2,961)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (940)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities |  |  |
Proceeds from issuance of common stock, net of offering costs | 76,716 us-gaap_ProceedsFromIssuanceOfCommonStock | 84,771 us-gaap_ProceedsFromIssuanceOfCommonStock |
Proceeds from stock option exercises | 744 us-gaap_ProceedsFromStockOptionsExercised | 1,100 us-gaap_ProceedsFromStockOptionsExercised | 47 us-gaap_ProceedsFromStockOptionsExercised
Purchase of treasury stock | (19)us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation |  |
Net cash provided by financing activities | 77,441 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 85,871 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 47 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net change in cash and cash equivalents | 41,110 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 68,738 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (7,475)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of period | 116,481 us-gaap_CashAndCashEquivalentsAtCarryingValue | 47,743 us-gaap_CashAndCashEquivalentsAtCarryingValue | 55,218 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of period | 157,591 us-gaap_CashAndCashEquivalentsAtCarryingValue | 116,481 us-gaap_CashAndCashEquivalentsAtCarryingValue | 47,743 us-gaap_CashAndCashEquivalentsAtCarryingValue
Noncash financing activities: |  |  |
Conversion of preferred stock |  | $ 2,947 us-gaap_ConversionOfStockAmountConverted1 |

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Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration