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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
Cash flows from operating activities: |  |  |
Net loss | $ (23,342)us-gaap_NetIncomeLoss | $ (17,143)us-gaap_NetIncomeLoss | $ (22,101)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Stock-based compensation | 885 us-gaap_ShareBasedCompensation | 622 us-gaap_ShareBasedCompensation | 529 us-gaap_ShareBasedCompensation
Noncash rent expense | 29 us-gaap_StraightLineRentAdjustments | (1)us-gaap_StraightLineRentAdjustments | (68)us-gaap_StraightLineRentAdjustments
Change in carrying value of preferred stock warrant liability | (504)us-gaap_FairValueAdjustmentOfWarrants | (202)us-gaap_FairValueAdjustmentOfWarrants | (39)us-gaap_FairValueAdjustmentOfWarrants
Depreciation and amortization | 126 us-gaap_DepreciationDepletionAndAmortization | 197 us-gaap_DepreciationDepletionAndAmortization | 346 us-gaap_DepreciationDepletionAndAmortization
Loss (gain) on disposal of property and equipment | (28)us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 7 us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 2 us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Loss on extinguishment of debt | 2,493 us-gaap_GainsLossesOnExtinguishmentOfDebt |  |
Noncash interest expense | 416 us-gaap_PaidInKindInterest | 588 us-gaap_PaidInKindInterest | 61 us-gaap_PaidInKindInterest
Changes in operating assets and liabilities: |  |  |
Accounts receivable, prepaid expenses and other current assets | (713)ceru_IncreaseDecreaseAccountsReceivablePrepaidExpensesAndOtherCurrentAssets | (229)ceru_IncreaseDecreaseAccountsReceivablePrepaidExpensesAndOtherCurrentAssets | (61)ceru_IncreaseDecreaseAccountsReceivablePrepaidExpensesAndOtherCurrentAssets
Accounts payable | 341 us-gaap_IncreaseDecreaseInAccountsPayable | 14 us-gaap_IncreaseDecreaseInAccountsPayable | (163)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued expenses | 1,236 us-gaap_IncreaseDecreaseInAccruedLiabilities | (467)us-gaap_IncreaseDecreaseInAccruedLiabilities | 489 us-gaap_IncreaseDecreaseInAccruedLiabilities
Net cash used in operating activities | (19,061)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (16,614)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (21,005)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities: |  |  |
Purchases of property and equipment | (225)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (7)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (180)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from sale of property and equipment | 40 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment |  |
Net cash used in investing activities | (185)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (7)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (180)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities: |  |  |
Proceeds from sale of common stock | 140 us-gaap_ProceedsFromIssuanceOfCommonStock | 35 us-gaap_ProceedsFromIssuanceOfCommonStock | 3 us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds from issuance of convertible promissory notes | 8,500 us-gaap_ProceedsFromConvertibleDebt | 8,824 us-gaap_ProceedsFromConvertibleDebt |
Proceeds from initial public offering, net | 59,862 us-gaap_ProceedsFromIssuanceInitialPublicOffering |  |
Proceeds from loans payable |  |  | 10,000 us-gaap_ProceedsFromNotesPayable
Payments on capital lease |  |  | (3)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations
Payments on loans payable | (3,348)us-gaap_RepaymentsOfNotesPayable | (3,084)us-gaap_RepaymentsOfNotesPayable | (376)us-gaap_RepaymentsOfNotesPayable
Cash paid for debt issuance costs | (222)us-gaap_PaymentsOfDebtIssuanceCosts | (373)us-gaap_PaymentsOfDebtIssuanceCosts | (4)us-gaap_PaymentsOfDebtIssuanceCosts
Proceeds from sale of redeemable convertible preferred stock, net of issuance costs |  |  | 12,927 us-gaap_ProceedsFromIssuanceOfRedeemableConvertiblePreferredStock
Net cash provided by financing activities | 64,932 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 5,402 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 22,547 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Net increase (decrease) in cash and cash equivalents | 45,686 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (11,219)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 1,362 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents — Beginning of year | 5,488 us-gaap_CashAndCashEquivalentsAtCarryingValue | 16,707 us-gaap_CashAndCashEquivalentsAtCarryingValue | 15,345 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents — End of year | 51,174 us-gaap_CashAndCashEquivalentsAtCarryingValue | 5,488 us-gaap_CashAndCashEquivalentsAtCarryingValue | 16,707 us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental disclosures of noncash investing and financing activities: |  |  |
Conversion of redeemable convertible preferred stock into common stock | 81,526 us-gaap_ConvertiblePreferredStockConvertedToOtherSecurities | 2,226 us-gaap_ConvertiblePreferredStockConvertedToOtherSecurities |
Conversion of convertible notes and accrued interest into common stock, net | 20,129 ceru_ConversionOfAccruedInterestAndConvertibleNotesPayable |  |
Reclassification of warrants to additional paid-in capital | 424 ceru_ReclassificationOfWarrantsAdjustedInAdditionalPaidInCapital |  |
Accretion of redeemable convertible preferred stock to redemption value |  |  | 73 us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment
Fair value of preferred stock warrants issued in connection with debt |  |  | 360 ceru_FairValueAdjustmentOfPreferredStockWarrants
Supplemental cash flow information — Interest paid | $ 400 us-gaap_InterestPaidNet | $ 664 us-gaap_InterestPaidNet | $ 507 us-gaap_InterestPaidNet

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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from issuance of callable preferred stock which is identified as being convertible to another type of financial security at the option of the issuer or the holder. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- 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
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- Definition Amount of the adjustment to rental revenues to measure escalating leasing revenues on a straight line basis. + References No definition available. + Details
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- Definition Amount of decrease to net income for accretion of temporary equity to its redemption value to derive net income apportioned to common stockholders. + References No definition available. + Details
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