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 6 - Income Taxes (Details Textual)

v3.25.3

Note 6 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
Note 6 - Income Taxes (Details Textual) - USD ($)	Sep. 30, 2025	Sep. 30, 2024
Deferred Tax Assets, Valuation Allowance	$ 0	$ 0
Unrecognized Tax Benefits, Interest on Income Taxes Expense	0	0
Domestic Tax Jurisdiction [Member]
Income Taxes Receivable, Current	1,544,000
Operating Loss Carryforwards	$ 681,000	0
Domestic Tax Jurisdiction [Member] \| Internal Revenue Service (IRS) [Member]
Open Tax Year	2020 2021 2022 2023 2024
Domestic Tax Jurisdiction [Member] \| Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	$ 106,000	0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 3,700,000	1,259,000
Open Tax Year	2016 2017 2018 2019 2020 2021 2022 2023 2024
State and Local Jurisdiction [Member] \| Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	$ 360,000	$ 370,000
State and Local Jurisdiction [Member] \| Research and Development and Alternative Minimum Tax Credit Carryforwards [Member]
Deferred Tax Assets, Valuation Allowance	$ 0

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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-SubTopic 10
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-Section 50
-Paragraph 2
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-Publisher FASB
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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

+ References

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-SubTopic 10
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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of interest expense for an underpayment of income taxes.

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