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Note 6 - Pension and Retirement Plans (Detail)	6 Months Ended
	Mar. 31, 2013
Number of Years Defined Benefit Plans are Closed to Newly Hired Employees	2 years

X

- Definition

Number of years that all of the Company's defined benefit plans are closed to newly hired employees.

+ References

No definition available.

+ Details

Name:	cspi_NumberOfYearsDefinedBenefitPlansAreClosedToNewlyHiredEmployees
Namespace Prefix:	cspi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration