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Note 4 - Leases (Details Textual) ft² in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 30, 2023 USD ($) ft² | Dec. 31, 2022 USD ($)
Norton Facility [Member] |  |
Area of Real Estate Property (Square Foot) | ft² | 38 |
Norton Facility [Member] | Minimum [Member] |  |
Lessee, Operating Lease, Monthly Rent Payments | $ 13 |
Norton Facility [Member] | Maximum [Member] |  |
Lessee, Operating Lease, Monthly Rent Payments | $ 14 |
Facility Two [Member] | Lease Expiration, December 2020 [Member] |  |
Operating Lease, Real Estate, Number of Leases | 1 |
Norton Facility [Member] |  |
Operating Lease, Expense | $ 162 | $ 160

X
- Definition The amount of monthly rent payments for lessee under operating lease. + References No definition available. + Details
Name: | cpsh_LesseeOperatingLeaseMonthlyRentPayments
Namespace Prefix: | cpsh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of real estate operating leases. + References No definition available. + Details
Name: | cpsh_OperatingLeaseRealEstateNumberOfLeases
Namespace Prefix: | cpsh_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | instant

X
- Definition Area of a real estate property. + References No definition available. + Details
Name: | us-gaap_AreaOfRealEstateProperty
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-4 + Details
Name: | us-gaap_OperatingLeaseExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=cpsh_NortonFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=cpsh_FacilityTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LeaseContractualTermAxis=cpsh_LeaseExpirationDecember2020Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=cpsh_NortonFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |