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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2015 | Jan. 31, 2014 | Apr. 30, 2014 | Apr. 30, 2013
Operating revenue: |  |  |  |  |  |
Personalized oncology solutions | $ 453csbr_PersonalizedOncologySolutions | $ 590csbr_PersonalizedOncologySolutions | $ 1,245csbr_PersonalizedOncologySolutions | $ 1,834csbr_PersonalizedOncologySolutions | $ 2,264csbr_PersonalizedOncologySolutions | $ 2,390csbr_PersonalizedOncologySolutions
Translational oncology solutions | 1,376csbr_TranslationalOncologySolutions | 3,100csbr_TranslationalOncologySolutions | 4,377csbr_TranslationalOncologySolutions | 7,258csbr_TranslationalOncologySolutions | 9,286csbr_TranslationalOncologySolutions | 5,933csbr_TranslationalOncologySolutions
Total operating revenue | 1,829us-gaap_SalesRevenueServicesNet | 3,690us-gaap_SalesRevenueServicesNet | 5,622us-gaap_SalesRevenueServicesNet | 9,092us-gaap_SalesRevenueServicesNet | 11,550us-gaap_SalesRevenueServicesNet | 8,323us-gaap_SalesRevenueServicesNet
Costs and operating expenses: |  |  |  |  |  |
Cost of personalized oncology solutions | 674csbr_CostOfPersonalizedOncologySolutions | 614csbr_CostOfPersonalizedOncologySolutions | 2,190csbr_CostOfPersonalizedOncologySolutions | 2,139csbr_CostOfPersonalizedOncologySolutions | 2,731csbr_CostOfPersonalizedOncologySolutions | 2,672csbr_CostOfPersonalizedOncologySolutions
Cost of translational oncology solutions | 1,301csbr_CostOfTranslationalOncologySolutions | 1,008csbr_CostOfTranslationalOncologySolutions | 3,225csbr_CostOfTranslationalOncologySolutions | 2,585csbr_CostOfTranslationalOncologySolutions | 3,532csbr_CostOfTranslationalOncologySolutions | 2,656csbr_CostOfTranslationalOncologySolutions
Research and development | 1,093us-gaap_ResearchAndDevelopmentExpense | 535us-gaap_ResearchAndDevelopmentExpense | 3,757us-gaap_ResearchAndDevelopmentExpense | 1,614us-gaap_ResearchAndDevelopmentExpense | 2,265us-gaap_ResearchAndDevelopmentExpense | 1,920us-gaap_ResearchAndDevelopmentExpense
Sales and marketing | 1,094us-gaap_SellingAndMarketingExpense | 821us-gaap_SellingAndMarketingExpense | 3,340us-gaap_SellingAndMarketingExpense | 2,160us-gaap_SellingAndMarketingExpense | 3,155us-gaap_SellingAndMarketingExpense | 2,665us-gaap_SellingAndMarketingExpense
General and administrative | 1,086us-gaap_GeneralAndAdministrativeExpense | 2,120us-gaap_GeneralAndAdministrativeExpense | 3,944us-gaap_GeneralAndAdministrativeExpense | 4,476us-gaap_GeneralAndAdministrativeExpense | 6,127us-gaap_GeneralAndAdministrativeExpense | 4,631us-gaap_GeneralAndAdministrativeExpense
Total costs and operating expenses | 5,248us-gaap_OperatingExpenses | 5,098us-gaap_OperatingExpenses | 16,456us-gaap_OperatingExpenses | 12,974us-gaap_OperatingExpenses | 17,810us-gaap_OperatingExpenses | 14,544us-gaap_OperatingExpenses
Loss from operations | (3,419)us-gaap_OperatingIncomeLoss | (1,408)us-gaap_OperatingIncomeLoss | (10,834)us-gaap_OperatingIncomeLoss | (3,882)us-gaap_OperatingIncomeLoss | (6,260)us-gaap_OperatingIncomeLoss | (6,221)us-gaap_OperatingIncomeLoss
Other income (expense): |  |  |  |  |  |
Change in fair value of warrant liability | 621us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 846us-gaap_GainLossOnDerivativeInstrumentsNetPretax | 1,401us-gaap_GainLossOnDerivativeInstrumentsNetPretax | (1,202)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | (965)us-gaap_GainLossOnDerivativeInstrumentsNetPretax | (74)us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Other expense | (6)us-gaap_OtherNonoperatingIncomeExpense | (7)us-gaap_OtherNonoperatingIncomeExpense | (3)us-gaap_OtherNonoperatingIncomeExpense | (37)us-gaap_OtherNonoperatingIncomeExpense | (164)us-gaap_OtherNonoperatingIncomeExpense | (25)us-gaap_OtherNonoperatingIncomeExpense
Total other income (expense) | 615us-gaap_NonoperatingIncomeExpense | 839us-gaap_NonoperatingIncomeExpense | 1,398us-gaap_NonoperatingIncomeExpense | (1,239)us-gaap_NonoperatingIncomeExpense | (1,129)us-gaap_NonoperatingIncomeExpense | (99)us-gaap_NonoperatingIncomeExpense
Net loss before income tax expense | (2,804)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (569)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (9,436)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (5,121)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (7,389)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | (6,320)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Provision for income taxes | 12us-gaap_IncomeTaxExpenseBenefit | 5us-gaap_IncomeTaxExpenseBenefit | 27us-gaap_IncomeTaxExpenseBenefit | 13us-gaap_IncomeTaxExpenseBenefit | 17us-gaap_IncomeTaxExpenseBenefit | 10us-gaap_IncomeTaxExpenseBenefit
Net loss | $ (2,816)us-gaap_NetIncomeLoss | $ (574)us-gaap_NetIncomeLoss | $ (9,463)us-gaap_NetIncomeLoss | $ (5,134)us-gaap_NetIncomeLoss | $ (7,406)us-gaap_NetIncomeLoss | $ (6,330)us-gaap_NetIncomeLoss
Net loss per common share outstanding, including redeemable common stock, basic and diluted |  |  |  |  | $ (0.11)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted
Weighted average common shares outstanding, including redeemable common stock, basic and diluted |  |  |  |  | 66,863,915us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted | 52,046,766us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Net loss per common share outstanding, including redeemable common stock, basic (in dollars per share) | $ (0.04)us-gaap_EarningsPerShareBasic | $ (0.01)us-gaap_EarningsPerShareBasic | $ (0.14)us-gaap_EarningsPerShareBasic | $ (0.08)us-gaap_EarningsPerShareBasic |  |
Net loss per common share outstanding, including redeemable common stock, diluted (in dollars per share) | $ (0.05)us-gaap_EarningsPerShareDiluted | $ (0.02)us-gaap_EarningsPerShareDiluted | $ (0.16)us-gaap_EarningsPerShareDiluted | $ (0.08)us-gaap_EarningsPerShareDiluted |  |
Weighted average common shares outstanding, including redeemable common stock, basic (in shares) | 66,893,364us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 66,867,114us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 66,890,929us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 66,860,792us-gaap_WeightedAverageNumberOfSharesOutstandingBasic |  |
Weighted average common shares outstanding, including redeemable common stock, diluted (in shares) | 67,245,577us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 66,867,114us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 67,243,142us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 66,860,792us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding |  |

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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