The price per share at which the common stock purchased during the period.

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- Definition

The estimated fair value of warrants.

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No definition available.

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- Definition

Percentage of cash penalty equal to the aggregate purchase price paid by investor.

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No definition available.

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- Definition

The percentage of common stock purchased by investors.

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No definition available.

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- Definition

The total amount of potential penalties under this registration payment arrangement.

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No definition available.

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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price and the additional capital contribution to the entity.

+ References

No definition available.

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- Definition

Percentage describes the limit of the aggregate Purchase Price paid by the investors.

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No definition available.

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- Definition

The warrants exercise price per share.

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No definition available.

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- Definition

The number warrants issued during the period for purchase of common stock.

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No definition available.

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- Definition

Value of net shares reclassified to mandatorily redeemable capital stock.

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No definition available.

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- Definition

The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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-Name Accounting Standards Codification

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-Section 45

-Paragraph 14

-Subparagraph (a)

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- Definition

An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)(iii)

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

Number of shares of stock issued during the period pursuant to acquisitions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

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-Name Regulation S-X (SX)

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- Definition

Value of forfeitures of stock or other type of equity issued of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Section 50

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Gross value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP). Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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No definition available.

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- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

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-Subparagraph (SX 210.4-08.(i))

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-Name Regulation S-X (SX)

-Number 210

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Redeemable Common Stock and Stock Purchase Warrants (Details Textual) (USD $)	1 Months Ended		9 Months Ended	12 Months Ended
	Jan. 28, 2013	Mar. 24, 2011	Jan. 31, 2015	Apr. 30, 2014	Apr. 30, 2013
Common Stock Purchase Price	$ 0.50csbr_CommonStockPurchasePrice	$ 0.75csbr_CommonStockPurchasePrice
Proceeds From Issuance Of Common Stock And Warrants	$ 9,100,000
Stock Issued During Period, Shares, Acquisitions	18,600,000	12,533,333
Stock Issued During Period, Value, Share-based Compensation, Gross	9,300,000	9,400,000
Stock Issued During Period, Value, Share-based Compensation, Forfeited	500,000	500,000
Estimated Fair Value Of Warrants				2,011,000csbr_EstimatedFairValueOfWarrants	1,046,000csbr_EstimatedFairValueOfWarrants
Percentage Of Cash Penalties			1.00%csbr_PercentageOfCashPenalties	1.00%csbr_PercentageOfCashPenalties
Purchase Price Limit Percentage			10.00%csbr_PurchasePriceLimitPercentage	10.00%csbr_PurchasePriceLimitPercentage
Maximum [Member]
Potential Penalties Amount			130,000	130,000
Minimum [Member]
Potential Penalties Amount			50,000	50,000
January 2013 Private Placement [Member]
Common Stock Purchase Price				$ 0.50
Proceeds From Issuance Of Common Stock And Warrants				9,300,000
Warrants Issued During Period For Common Stock				1,860,000
Warrants Exercise Price Per Share				$ 0.66
Percentage Of Common Stock Purchased				25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period				1,064,658
Net Shares Reclassified to Mandatorily Redeemable Capital Stock, Value				8,800,000
Proceeds from Issuance of Warrants				400,000
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost				200,000
Warrants and Rights Outstanding				800,000
April 2011 Private Placement [Member]
Common Stock Purchase Price				$ 0.75
Proceeds From Issuance Of Common Stock And Warrants				9,400,000
Warrants Issued During Period For Common Stock				1,266,667
Warrants Exercise Price Per Share				$ 0.90
Percentage Of Common Stock Purchased				25.00%
Net Shares Reclassified to Mandatorily Redeemable Capital Stock, Value				8,200,000
Proceeds from Issuance of Warrants				900,000
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost				$ 300,000
April 2011 Private Placement [Member] \| Maximum [Member]
Warrants Exercise Price Per Share				$ 0.90
April 2011 Private Placement [Member] \| Minimum [Member]
Warrants Exercise Price Per Share				$ 0.50