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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2015 | Jan. 31, 2014 | Apr. 30, 2014 | Apr. 30, 2013
Operating activities: |  |  |  |
Net loss | $ (9,463)us-gaap_NetIncomeLoss | $ (5,134)us-gaap_NetIncomeLoss | $ (7,406)us-gaap_NetIncomeLoss | $ (6,330)us-gaap_NetIncomeLoss
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Stock-based compensation expense | 2,284us-gaap_ShareBasedCompensation | 1,968us-gaap_ShareBasedCompensation | 2,807us-gaap_ShareBasedCompensation | 2,376us-gaap_ShareBasedCompensation
Net foreign currency remeasurement loss |  |  | 124us-gaap_ForeignCurrencyTransactionGainLossBeforeTax | 0us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Depreciation expense | 166us-gaap_DepreciationAndAmortization | 158us-gaap_DepreciationAndAmortization | 213us-gaap_DepreciationAndAmortization | 203us-gaap_DepreciationAndAmortization
Change in fair value of warrant liability | (1,401)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 1,202us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 965us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 74us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Changes in operating assets and liabilities: |  |  |  |
Accounts receivable | 233us-gaap_IncreaseDecreaseInAccountsReceivable | (2,623)us-gaap_IncreaseDecreaseInAccountsReceivable | (825)us-gaap_IncreaseDecreaseInAccountsReceivable | 84us-gaap_IncreaseDecreaseInAccountsReceivable
Grant receivable |  |  | 0csbr_IncreaseOrDecreaseInGrantReceivable | 0csbr_IncreaseOrDecreaseInGrantReceivable
Prepaid expenses, deposits and other | 125us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 34us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (68)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (110)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Restricted cash | 2us-gaap_IncreaseDecreaseInRestrictedCash | 28us-gaap_IncreaseDecreaseInRestrictedCash | 27us-gaap_IncreaseDecreaseInRestrictedCash | (42)us-gaap_IncreaseDecreaseInRestrictedCash
Accounts payable | 381us-gaap_IncreaseDecreaseInAccountsPayable | (266)us-gaap_IncreaseDecreaseInAccountsPayable | (223)us-gaap_IncreaseDecreaseInAccountsPayable | (472)us-gaap_IncreaseDecreaseInAccountsPayable
Accrued liabilities | (167)us-gaap_IncreaseDecreaseInAccruedLiabilities | 94us-gaap_IncreaseDecreaseInAccruedLiabilities | (24)us-gaap_IncreaseDecreaseInAccruedLiabilities | (14)us-gaap_IncreaseDecreaseInAccruedLiabilities
Deferred revenue | 218us-gaap_IncreaseDecreaseInDeferredRevenue | 981us-gaap_IncreaseDecreaseInDeferredRevenue | 977us-gaap_IncreaseDecreaseInDeferredRevenue | (71)us-gaap_IncreaseDecreaseInDeferredRevenue
Net cash used in operating activities | (7,622)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (3,558)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (3,433)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | (4,302)us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Investing activities: |  |  |  |
Purchase of property and equipment | (84)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (164)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (234)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (57)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Net cash used in investing activities | (84)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (164)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (234)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (57)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Financing activities: |  |  |  |
Proceeds from executive note financing | 2,000us-gaap_ProceedsFromNotesPayable | 0us-gaap_ProceedsFromNotesPayable |  |
Capital lease payments | (5)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations | 0us-gaap_RepaymentsOfLongTermCapitalLeaseObligations |  |
Proceeds from exercise of options and warrants | 2us-gaap_ProceedsFromStockOptionsExercised | 0us-gaap_ProceedsFromStockOptionsExercised | 21us-gaap_ProceedsFromStockOptionsExercised | 0us-gaap_ProceedsFromStockOptionsExercised
Net cash provided by financing activities | 1,997us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 0us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 21us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 9,141us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Private placement of commons shares and warrants |  |  | 0us-gaap_ProceedsFromIssuanceOfPrivatePlacement | 9,141us-gaap_ProceedsFromIssuanceOfPrivatePlacement
Exchange rate effect on cash and cash equivalents | 0us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | (27)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | (24)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | 25us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Decrease in cash and cash equivalents | (5,709)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (3,749)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (3,670)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 4,807us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents, beginning of period | 5,891us-gaap_CashAndCashEquivalentsAtCarryingValue | 9,561us-gaap_CashAndCashEquivalentsAtCarryingValue | 9,561us-gaap_CashAndCashEquivalentsAtCarryingValue | 4,754us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents, end of period | 182us-gaap_CashAndCashEquivalentsAtCarryingValue | 5,812us-gaap_CashAndCashEquivalentsAtCarryingValue | 5,891us-gaap_CashAndCashEquivalentsAtCarryingValue | 9,561us-gaap_CashAndCashEquivalentsAtCarryingValue
Non-cash investing activities: |  |  |  |
Purchased equipment under capital lease | $ 124us-gaap_CapitalLeaseObligationsIncurred | $ 0us-gaap_CapitalLeaseObligationsIncurred |  |

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- Definition The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement. + 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 associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + 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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: 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 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 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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