XML 21 R9.htm IDEA: XBRL DOCUMENT
v3.20.2

Accounts Receivable, Unbilled Services and Deferred Revenue | 12 Months Ended
--- | ---
Apr. 30, 2020
Receivables [Abstract] |
Accounts Receivable, Unbilled Services and Deferred Revenue | Accounts Receivable, Unbilled Services and Deferred Revenue Accounts receivable and unbilled services were as follows (in thousands):
| April 30, 2020 |  | April 30, 2019
Accounts receivable | $ | 2,655 |  |  | $ | 1,982 |
Unbilled services | 2,404 |  |  | 2,417 |
Total accounts receivable and unbilled services | 5,059 |  |  | 4,399 |
Less: allowance for doubtful accounts | (289 | ) |  | (22 | )
Total accounts receivable, net | $ | 4,770 |  |  | $ | 4,377 |
Deferred revenue was as follows (in thousands):
| April 30, 2020 |  | April 30, 2019
Deferred revenue | $ | 5,815 |  |  | $ | 4,022 |
Deferred revenue is shown as a current liability on the Company's balance sheet.

X
- Definition Accounts Receivable, Unbilled Services And Deferred Revenue [Text Block] + References No definition available. + Details
Name: | csbr_AccountsReceivableUnbilledServicesAndDeferredRevenueTextBlock
Namespace Prefix: | csbr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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