XML 33 R23.htm IDEA: XBRL DOCUMENT
v3.21.2

Organization, Use of Estimates and Basis of Presentation (Details) | 3 Months Ended
--- | ---
Jul. 31, 2021 subsidiary
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Number of operating subsidiaries | 3

X
- Definition Number Of Operating Subsidiaries + References No definition available. + Details
Name: | csbr_NumberOfOperatingSubsidiaries
Namespace Prefix: | csbr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration