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

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		12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025
Revenue Benchmark [Member]
Number of Major Customers	2	2
Revenue Benchmark [Member] \| Customer A [Member]
Concentration Risk, Percentage	16.00%	11.00%
Revenue Benchmark [Member] \| Customer B [Member]
Concentration Risk, Percentage	15.00%	17.00%
Accounts Receivable [Member]
Number of Major Customers	2		2
Accounts Receivable [Member] \| Customer A [Member]
Concentration Risk, Percentage	14.00%		17.00%
Accounts Receivable [Member] \| Customer B [Member]
Concentration Risk, Percentage			11.00%
Accounts Receivable [Member] \| Customer C [Member]
Concentration Risk, Percentage	19.00%

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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