Clearfield, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 9 - Leases (Details Textual)

v3.25.3

Note 9 - Leases (Details Textual)	1 Months Ended		12 Months Ended
Note 9 - Leases (Details Textual)	Apr. 30, 2025 USD ($)	Apr. 30, 2024 USD ($) ft²	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Nov. 19, 2021 ft²	Jan. 01, 2015 ft²
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability			$ 0	$ 4,364,000	$ 0
Operating Lease, Weighted Average Remaining Lease Term			3 years 1 month 6 days	4 years 14 days	3 years 6 months 7 days
Operating Lease, Weighted Average Discount Rate, Percent			7.42%	7.28%	3.04%
Operating Lease, Payments			$ 3,305,000	$ 3,233,000	$ 3,158,000
7050 Winnetka Avenue North, Brooklyn Park, Minnesota [Member]
Area of Real Estate Property \| ft²							85,000
Lessee, Operating Lease, Term of Contract							10 years 2 months
Lessee, Operating Lease, Renewal Term		3 years
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 1,337,000
Tijuana, Mexico 3 [Member]
Area of Real Estate Property \| ft²		318,000
Lessee, Operating Lease, Term of Contract		7 years
Lessee, Operating Lease, Renewal Term		5 years
Operating Lease, Monthly Payment		$ 169,000
Operating Lease, Payments, Annual Increase, Percentage		2.00%
Tijuana, Mexico 3 [Member] \| Lease Mandatory Contractual Term [Member]
Lessee, Operating Lease, Term of Contract		5 years
Brooklyn Park, MN [Member]
Area of Real Estate Property \| ft²						105,000
Lessee, Operating Lease, Term of Contract						5 years
Lessee, Operating Lease, Renewal Term						5 years

- Definition

Amount of monthly cash outflow for operating lease payments.

+ References

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+ References

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- Definition

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+ References

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