XML 75 R61.htm IDEA: XBRL DOCUMENT
v3.23.3

Note 9 - Leases (Details Textual) |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 01, 2024 EUR (€) | May 11, 2023 EUR (€) | Jul. 31, 2021 USD ($) ft² | Sep. 30, 2023 USD ($) ft² | Sep. 30, 2022 USD ($) | Sep. 30, 2021 USD ($) | Nov. 19, 2021 ft² | Jan. 01, 2015
Operating Lease, Weighted Average Remaining Lease Term |  |  |  | 5 years 1 month 28 days | 4 years 14 days | 3 years 1 month 2 days |  |
Operating Lease, Weighted Average Discount Rate, Percent |  |  |  | 3.59% | 3.22% | 3.41% |  |
Operating Lease, Payments | $ |  |  |  | $ 3,954,000 | $ 2,064,000 | $ 1,290,000 |  |
Tabasalu, Estonia [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property |  |  |  | 49,000 |  |  |  |
Operating Lease, Monthly Payment | € |  | € 20,400 |  |  |  |  |  |
Tabasalu, Estonia [Member] | Forecast [Member] |  |  |  |  |  |  |  |
Operating Lease, Monthly Payment | € | € 25,000 |  |  |  |  |  |  |
Tabasalu, Estonia [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Lessee, Operating Lease, Term of Contract (Year) |  | 60 months |  |  |  |  |  |
Operating Lease, Payments, Annual Increase, Percentage |  | 5.00% |  |  |  |  |  |
7050 Winnetka Avenue North, Brooklyn Park, Minnesota [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property |  |  |  | 85,000 |  |  |  |
Lessee, Operating Lease, Term of Contract (Year) |  |  |  |  |  |  |  | 10 years 2 months 1 day
Tijuana, Mexico 3 [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property |  |  | 318,000 |  |  |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract |  |  | 7 years |  |  |  |  |
Lessee, Operating Lease, Number of Options to Renew |  |  | 2 |  |  |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term |  |  | 5 years |  |  |  |  |
Operating Lease, Monthly Payment | $ |  |  | $ 162,000 |  |  |  |  |
Operating Lease, Payments, Annual Increase, Percentage |  |  | 2.00% |  |  |  |  |
Tijuana, Mexico 3 [Member] | Lease Mandatory Contractual Term [Member] |  |  |  |  |  |  |  |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract |  |  | 5 years |  |  |  |  |
Brooklyn Part, MN [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property |  |  |  |  |  |  | 105,000 |
Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract |  |  |  |  |  |  | 5 years |
Lessee, Operating Lease, Lease Not yet Commenced, Renewal Term |  |  |  |  |  |  | 5 years |
Oulu, Finland [Member] |  |  |  |  |  |  |  |
Area of Real Estate Property |  |  |  | 25,000 |  |  |  |
Operating Lease, Monthly Payment | $ |  |  |  | $ 40,000 |  |  |  |

X
- Definition Represents the number of options to renew an operating lease. + References No definition available. + Details
Name: | clfd_LesseeOperatingLeaseNumberOfOptionsToRenew
Namespace Prefix: | clfd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of monthly cash outflow for operating lease payments. + References No definition available. + Details
Name: | clfd_OperatingLeaseMonthlyPayment
Namespace Prefix: | clfd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Annual percentage increase in operating lease payments. + References No definition available. + Details
Name: | clfd_OperatingLeasePaymentsAnnualIncreasePercentage
Namespace Prefix: | clfd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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 Term of lessee's operating lease renewal for lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedRenewalTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease not yet commenced, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseLeaseNotYetCommencedTermOfContract1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseTermOfContract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-5 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_OperatingLeasePayments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
Name: | us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
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_StatementGeographicalAxis=clfd_WinnetkaAvenueNorthBrooklynParkMinnesotaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=clfd_TijuanaMexico3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | srt_StatementGeographicalAxis=clfd_BrooklynPartMNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=clfd_OuluFinlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |