Note 15 - Income Taxes - Enactment of the One Big Beautiful Bill Act - Modifications to FDII Expenses (Details) - USD ($)	3 Months Ended	6 Months Ended
Dec. 26, 2026	Sep. 26, 2026	Dec. 26, 2026
Forecast [Member]
Expected expense	$ 216,914	$ 216,914	$ 433,828

Amount of expense on unamortized costs on foreign-derived intangible income expected to be recognized.

No definition available.

Name:	cpsh_ForeignderivedIntangibleIncomeExpectedExpense
Namespace Prefix:	cpsh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration