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v2.4.1.9

Segment Information (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2014 | Oct. 31, 2013 | Oct. 31, 2014 | Oct. 31, 2013
Net revenue | $ 1,882 us-gaap_SalesRevenueServicesNet |  | $ 2,383 us-gaap_SalesRevenueServicesNet |  | $ 3,793 us-gaap_SalesRevenueServicesNet |  | $ 5,403 us-gaap_SalesRevenueServicesNet |
Sales and marketing costs | (1,203)us-gaap_SellingAndMarketingExpense |  | (698)us-gaap_SellingAndMarketingExpense |  | (2,246)us-gaap_SellingAndMarketingExpense |  | (1,340)us-gaap_SellingAndMarketingExpense |
Stock- based compensation expense | (820)us-gaap_AllocatedShareBasedCompensationExpense |  | (476)us-gaap_AllocatedShareBasedCompensationExpense |  | (1,627)us-gaap_AllocatedShareBasedCompensationExpense |  | (1,028)us-gaap_AllocatedShareBasedCompensationExpense |
Personalized Oncology Solutions [Member] |  |  |  |  |  |  |  |
Net revenue | 452 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 623 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 792 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 1,245 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |
Direct cost of services | (745)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (726)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (1,498)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (1,470)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |
Sales and marketing costs | (423)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (423)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (877)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (754)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |
Other operating expenses | 0 us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 0 us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 0 us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | 0 us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |
Stock- based compensation expense | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember | [1]
Segment profit (loss) | (716)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (526)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (1,583)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |  | (979)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_PersonalizedOncologySolutionsMember |
Translational Oncology Solutions [Member] |  |  |  |  |  |  |  |
Net revenue | 1,430 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | 1,760 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | 3,001 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | 4,158 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |
Direct cost of services | (943)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (696)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (1,905)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (1,566)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |
Sales and marketing costs | (611)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (213)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (1,036)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (460)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |
Other operating expenses | (1,142)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (673)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (2,460)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (1,063)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |
Stock- based compensation expense | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember | [1] | 0 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember | [1]
Segment profit (loss) | (1,266)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | 178 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | (2,400)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |  | 1,069 us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_TranslationalOncologySolutionsMember |
Unallocated Corporate Overhead [Member] |  |  |  |  |  |  |  |
Net revenue | 0 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |
Direct cost of services | 0 us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |
Sales and marketing costs | 0 us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | 0 us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |
Other operating expenses | (864)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (877)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (1,777)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (1,534)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |
Stock- based compensation expense | (820)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember | [1] | (476)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember | [1] | (1,627)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember | [1] | (1,028)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember | [1]
Segment profit (loss) | (1,684)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (1,353)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (3,404)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |  | (2,562)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_UnallocatedCorporateOverheadMember |
Consolidated [Member] |  |  |  |  |  |  |  |
Net revenue | 1,882 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | 2,383 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | 3,793 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | 5,403 us-gaap_SalesRevenueServicesNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |
Direct cost of services | (1,688)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (1,422)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (3,403)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (3,036)us-gaap_CostOfServices / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |
Sales and marketing costs | (1,034)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (636)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (1,913)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (1,214)us-gaap_SellingAndMarketingExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |
Other operating expenses | (2,006)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (1,550)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (4,237)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | (2,597)us-gaap_OtherOperatingIncomeExpenseNet / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |
Stock- based compensation expense | (820)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember | [1] | (476)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember | [1] | (1,627)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember | [1] | (1,028)us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember | [1]
Segment profit (loss) | $ (3,666)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | $ (1,701)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | $ (7,387)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |  | $ (2,472)us-gaap_ProfitLoss / us-gaap_StatementBusinessSegmentsAxis = csbr_ConsolidatedMember |
[1] | Stock compensation expense is shown separately and is excluded from direct costs of services, sales and marketing costs, and other operating expenses, as it is managed on a consolidated basis and is not used by management to evaluate the performance of its segments.

X
- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Total costs related to services rendered by an entity during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 2 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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