Clearfield, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Leases (Details Textual)

Note 15 - Leases (Details Textual)				1 Months Ended	3 Months Ended		6 Months Ended		9 Months Ended
Note 15 - Leases (Details Textual)	Apr. 01, 2024 EUR (€)	May 01, 2023 EUR (€)	Jul. 31, 2021 USD ($) ft²	Apr. 30, 2024 USD ($) ft²	Mar. 31, 2024 USD ($) ft²	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) ft²	Mar. 31, 2023 USD ($)	Jun. 30, 2023 EUR (€) ft²	May 11, 2023 ft²	Nov. 19, 2021 ft²	Jan. 01, 2015
Operating Lease, Weighted Average Remaining Lease Term					4 years 9 months 14 days	3 years 9 months 14 days	4 years 9 months 14 days	3 years 9 months 14 days
Operating Lease, Weighted Average Discount Rate, Percent					3.80%	3.23%	3.80%	3.23%
Operating Lease, Payments \| $					$ 1,049,000	$ 950,000	$ 2,093,000	$ 1,907,000
Tabasalu, Estonia [Member]
Area of Real Estate Property										49,000
Lessee, Operating Lease, Term of Contract (Year)										10 years
Operating Lease, Monthly Payment \| €	€ 25,000	€ 20,400
Tabasalu, Estonia [Member] \| Minimum [Member]
Operating Lease, Payments, Annual Increase, Percentage		5.00%
7050 Winnetka Avenue North, Brooklyn Park, Minnesota [Member]
Area of Real Estate Property					85,000		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, Term of Contract (Year)			7 years
Lessee, Operating Lease, Number of Options to Renew			2
Lessee, Operating Lease, Renewal Term			5 years
Operating Lease, Monthly Payment \| $			$ 162,000
Operating Lease, Payments, Annual Increase, Percentage			2.00%
Tijuana, Mexico 3 [Member] \| Subsequent Event [Member]
Area of Real Estate Property				318,000
Lessee, Operating Lease, Term of Contract (Year)				7 years
Lessee, Operating Lease, Number of Options to Renew				2
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 (Year)			5 years
Tijuana, Mexico 3 [Member] \| Lease Mandatory Contractual Term [Member] \| Subsequent Event [Member]
Lessee, Operating Lease, Term of Contract (Year)				5 years
Brooklyn Part, MN [Member]
Area of Real Estate Property											105,000
Lessee, Operating Lease, Term of Contract (Year)											5 years
Lessee, Operating Lease, Renewal Term											5 years
Oulu, Finland [Member]
Area of Real Estate Property									25,000
Operating Lease, Monthly Payment \| €									€ 40,000