Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Segment Reporting - Reconciliation of Revenue from Segments to Consolidated (Details)

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Note 12 - Segment Reporting - Reconciliation of Revenue from Segments to Consolidated (Details) - USD ($)
 3 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Revenue from external customers $ 34,230,000 $ 85,942,000
Revenue from internal customers (Clearfield, Inc.) 0 0
Net investment income 2,069,000 303,000
Interest expense 126,000 243,000
Depreciation and amortization 1,695,000 1,353,000
Stock based compensation 1,271,000 660,000
Income taxes (951,000) 3,695,000
Net loss (5,268,000) 14,255,000
Capital expenditures 2,352,000 1,984,000
Intersegment Eliminations [Member]    
Revenue from external customers 0 0
Revenue from internal customers (Clearfield, Inc.) (883,000) (1,186,000)
Net investment income (60,000) 0
Interest expense (58,000) 0
Depreciation and amortization 0 0
Stock based compensation 0 0
Income taxes 0 0
Net loss (126,000) (153,000)
Capital expenditures 0 0
Clearfield [Member] | Operating Segments [Member]    
Revenue from external customers 28,101,000 78,355,000
Revenue from internal customers (Clearfield, Inc.) 0 0
Net investment income 2,127,000 301,000
Interest expense 0 170,000
Depreciation and amortization 1,340,000 1,009,000
Stock based compensation 1,222,000 660,000
Income taxes (583,000) 3,773,000
Net loss (3,383,000) 14,718,000
Capital expenditures 1,227,000 1,787,000
Nestor Cables [Member] | Operating Segments [Member]    
Revenue from external customers 6,129,000 7,587,000
Revenue from internal customers (Clearfield, Inc.) 883,000 1,186,000
Net investment income 2,000 2,000
Interest expense 184,000 73,000
Depreciation and amortization 355,000 344,000
Stock based compensation 49,000 0
Income taxes (368,000) (78,000)
Net loss (1,759,000) (310,000)
Capital expenditures $ 1,125,000 $ 198,000