XML 46 R34.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Information (Detail) - Major customers (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014
Segment Reporting Information [Line Items]
Segment Reporting, Disclosure of Major Customers	0.1
Customer A
Segment Reporting Information [Line Items]
Amount (in Dollars)	$ 2.8us-gaap_Revenues / us-gaap_MajorCustomersAxis = cspi_CustomerAMember	$ 6.1us-gaap_Revenues / us-gaap_MajorCustomersAxis = cspi_CustomerAMember
% of Revenues	13.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = cspi_CustomerAMember	29.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = cspi_CustomerAMember
Customer B
Segment Reporting Information [Line Items]
Accounts Receivable, Gross	3us-gaap_AccountsReceivableGross / us-gaap_MajorCustomersAxis = cspi_CustomerBMember		3us-gaap_AccountsReceivableGross / us-gaap_MajorCustomersAxis = cspi_CustomerBMember
Amount (in Dollars)	$ 2.9us-gaap_Revenues / us-gaap_MajorCustomersAxis = cspi_CustomerBMember	$ 3.3us-gaap_Revenues / us-gaap_MajorCustomersAxis = cspi_CustomerBMember
% of Revenues	14.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = cspi_CustomerBMember	15.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_MajorCustomersAxis = cspi_CustomerBMember
concentration risk, percentage, accounts receivable	20.00%cspi_Concentrationriskpercentageaccountsreceivable / us-gaap_MajorCustomersAxis = cspi_CustomerBMember		23.00%cspi_Concentrationriskpercentageaccountsreceivable / us-gaap_MajorCustomersAxis = cspi_CustomerBMember

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the balance.

+ References

No definition available.

+ Details

Name:	cspi_Concentrationriskpercentageaccountsreceivable
Namespace Prefix:	cspi_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

For unclassified balance sheet, amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 3

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.9)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_AccountsReceivableGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ 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)

-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

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Disclosure of the extent of enterprise reliance on its major customers. For example, includes revenues from transactions with a single external customer amounting to 10 percent or more of the entity's revenues, the total amount of revenues from each such customer, and the identity of the segment or segments reporting the revenues. A group of entities that the entity knows to be under common control generally will be considered a single customer for inclusion in this item. The federal government, a state government, a local government (for example, a county or municipality), or a foreign government each will generally be considered as a single customer for inclusion in this item.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 42

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599

+ Details

Name:	us-gaap_SegmentReportingDisclosureOfMajorCustomers
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_MajorCustomersAxis=cspi_CustomerAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=cspi_CustomerBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: