XML 74 R62.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Employee Stock Purchase Plan (Details) - shares | 12 Months Ended |
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |  |  |
Number of shares covered under the Employee Stock Purchase Plan (ESPP) |  |  | 250,000
Purchase price per share as percentage of fair market value | 95.00% |  |
Issuance of shares under employee stock purchase plan (in shares) | 22,996 | 33,248 |
Shares available for future issuance under the ESPP | 149,086 |  |

X
- Definition Employee Stock Purchase Plan (ESPP), Shares available for Future Issuance + References No definition available. + Details
Name: | cspi_EmployeeStockPurchasePlanESPPSharesavailableforFutureIssuance
Namespace Prefix: | cspi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Employee Stock Purchase Plan (ESPP), Shares in ESPP + References No definition available. + Details
Name: | cspi_EmployeeStockPurchasePlanESPPSharesinESPP
Namespace Prefix: | cspi_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Purchase Price as Percentage of Fair Market Value + References No definition available. + Details
Name: | cspi_PurchasePriceasPercentageofFairMarketValue
Namespace Prefix: | cspi_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration