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v2.4.1.9

Property and Equipment (Details Textual) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Nov. 30, 2014 | Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2015 | Jan. 31, 2014 | Apr. 30, 2014
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Depreciation |  | $ 52 us-gaap_Depreciation | $ 56 us-gaap_Depreciation | $ 166 us-gaap_Depreciation | $ 158 us-gaap_Depreciation |
Monthly Capital Lease Payment | 3 csbr_MonthlyCapitalLeasePayment |  |  |  |  |
Capital Lease Minimum Lease Payment Percentage |  |  |  | 5.00%csbr_CapitalLeaseMinimumLeasePaymentPercentage |  |
Capital Leased Assets, Gross |  | 124 us-gaap_CapitalLeasedAssetsGross |  | 124 us-gaap_CapitalLeasedAssetsGross |  | 0 us-gaap_CapitalLeasedAssetsGross
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation |  | 6 us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation |  | 6 us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation |  | 0 us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation
Equipment Leased to Other Party [Member] |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |
Capital Leases, Balance Sheet, Assets by Major Class, Net | $ 149 us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_EquipmentLeasedToOtherPartyMember |  |  |  |  |

X
- Definition Percentage price of minimum future obligation of capital lease. + References No definition available. + Details
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Period Type: | duration

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- Definition The current monthly payment for capital lease contract. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 + Details
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Balance Type: | debit
Period Type: | instant

X
- Definition The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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X
- Definition The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 2) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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Balance Type: | credit
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X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Details
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- Details
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