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v2.4.1.9

Provision for Income Taxes (Details) (USD $) In Thousands, 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
Provision for Income Taxes, Current, Federal |  |  |  |  | $ 0us-gaap_CurrentFederalTaxExpenseBenefit | $ 0us-gaap_CurrentFederalTaxExpenseBenefit
Provision for Income Taxes, Current, State |  |  |  |  | 5us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 2us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Provision for Income Taxes, Current, Foriegn |  |  |  |  | 12us-gaap_CurrentForeignTaxExpenseBenefit | 8us-gaap_CurrentForeignTaxExpenseBenefit
Provision for Income Taxes, Current, Total |  |  |  |  | 17us-gaap_CurrentIncomeTaxExpenseBenefit | 10us-gaap_CurrentIncomeTaxExpenseBenefit
Provision for Income Taxes, Deferred, Federal |  |  |  |  | (2,015)us-gaap_DeferredFederalIncomeTaxExpenseBenefit | (2,258)us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Provision for Income Taxes, Deferred, State |  |  |  |  | (148)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | (196)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Provision for Income Taxes, Deferred, Foreign |  |  |  |  | 0us-gaap_DeferredForeignIncomeTaxExpenseBenefit | 0us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Provision for Income Taxes, Deferred, Total |  |  |  |  | (2,163)us-gaap_DeferredIncomeTaxExpenseBenefit | (2,454)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for Income Taxes, Change in valuation allowance, Federal |  |  |  |  | 2,015csbr_FederalIncomeTaxValuationAllowance | 2,258csbr_FederalIncomeTaxValuationAllowance
Provision for Income Taxes, Change in valuation allowance, State |  |  |  |  | 148csbr_StateAndLocalIncomeTaxValuationAllowance | 196csbr_StateAndLocalIncomeTaxValuationAllowance
Provision for Income Taxes, Change in valuation allowance, Foreign |  |  |  |  | 0csbr_ForeignIncomeTaxValuationAllowance | 0csbr_ForeignIncomeTaxValuationAllowance
Provision for Income Taxes, Change in valuation allowance, Total |  |  |  |  | 2,163csbr_ValuationAllowances | 2,454csbr_ValuationAllowances
Provision for Income Taxes, Total, Federal |  |  |  |  | 0us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations | 0us-gaap_FederalIncomeTaxExpenseBenefitContinuingOperations
Provision for Income Taxes, Total, State |  |  |  |  | 5us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations | 2us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations
Provision for Income Taxes, Total, Foreign |  |  |  |  | 12us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations | 8us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations
Provision for Income Taxes, Total | $ 12us-gaap_IncomeTaxExpenseBenefit | $ 5us-gaap_IncomeTaxExpenseBenefit | $ 27us-gaap_IncomeTaxExpenseBenefit | $ 13us-gaap_IncomeTaxExpenseBenefit | $ 17us-gaap_IncomeTaxExpenseBenefit | $ 10us-gaap_IncomeTaxExpenseBenefit

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