Clearfield, Inc. Quarterly report [Sections 13 or 15(d)]

Note 9 - Major Customer Concentration (Details Textual)

Note 9 - Major Customer Concentration (Details Textual) - Customer Concentration Risk [Member]	3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2024
Revenue Benchmark [Member]
Number of Major Customers	3	2	3	2
Revenue Benchmark [Member] \| One Customer [Member]
Concentration Risk, Percentage	14.00%	15.00%	14.00%
Revenue Benchmark [Member] \| Customer Two [Member]
Concentration Risk, Percentage	12.00%	11.00%	11.00%	14.00%
Revenue Benchmark [Member] \| Customer Three [Member]
Concentration Risk, Percentage	12.00%		10.00%
Revenue Benchmark [Member] \| Customer One [Member]
Concentration Risk, Percentage				17.00%
Accounts Receivable [Member]
Number of Major Customers			2		3
Accounts Receivable [Member] \| One Customer [Member]
Concentration Risk, Percentage					16.00%
Accounts Receivable [Member] \| Customer Two [Member]
Concentration Risk, Percentage			13.00%		11.00%
Accounts Receivable [Member] \| Customer Three [Member]
Concentration Risk, Percentage					10.00%
Accounts Receivable [Member] \| Customer One [Member]
Concentration Risk, Percentage			16.00%

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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