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Operating Segments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |
Cost of services | $ 571,520 | $ 490,640 |
Gross profit | 178,027 | 143,804 |
Selling, general and administrative expenses | 103,039 | 85,850 |
Contingent consideration | 339 | 35 |
Loss (gain) on sale of assets | 30 | (71) |
Operating income (loss) | 74,619 | 57,990 |
Depreciation and amortization expense | 11,087 | 7,617 |
Capital expenditures | 13,169 | 6,515 |
Total assets | 1,265,009 | 1,042,019 | $ 1,244,026
Revenues | 749,547 | 634,444 |
Noncontrolling Interest, Change in Redemption Value | 1,514 | 3,683 |
Commercial and Industrial [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of services | 73,375 | 71,045 |
Gross profit | 15,116 | 13,907 |
Selling, general and administrative expenses | 8,064 | 6,847 |
Loss (gain) on sale of assets | (4) | 15 |
Operating income (loss) | 7,056 | 7,045 |
Depreciation and amortization expense | 573 | 475 |
Capital expenditures | 2,982 | 821 |
Total assets | 99,668 | 101,621 |
Revenues | 88,491 | 84,952 |
Communications [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of services | 184,149 | 134,473 |
Gross profit | 48,811 | 36,275 |
Selling, general and administrative expenses | 20,238 | 14,901 |
Loss (gain) on sale of assets | (38) | (4) |
Operating income (loss) | 28,611 | 21,378 |
Depreciation and amortization expense | 1,203 | 723 |
Capital expenditures | 4,680 | 1,000 |
Total assets | 294,246 | 215,475 |
Revenues | 232,960 | 170,748 |
Infrastructure Solutions [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of services | 73,153 | 44,697 |
Gross profit | 34,972 | 18,191 |
Selling, general and administrative expenses | 11,268 | 7,285 |
Contingent consideration | 339 | 0 |
Loss (gain) on sale of assets | 79 | 0 |
Operating income (loss) | 23,286 | 10,906 |
Depreciation and amortization expense | 3,673 | 1,227 |
Capital expenditures | 2,111 | 1,151 |
Total assets | 272,625 | 185,875 |
Revenues | 108,125 | 62,888 |
Residential [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of services | 240,843 | 240,425 |
Gross profit | 79,128 | 75,431 |
Selling, general and administrative expenses | 55,312 | 51,378 |
Contingent consideration | 0 | 35 |
Loss (gain) on sale of assets | (7) | (82) |
Operating income (loss) | 23,823 | 24,100 |
Depreciation and amortization expense | 5,411 | 4,962 |
Capital expenditures | 2,341 | 3,364 |
Total assets | 390,468 | 388,808 |
Revenues | 319,971 | 315,856 |
Corporate Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Cost of services | 0 | 0 |
Gross profit | 0 | 0 |
Selling, general and administrative expenses | 8,157 | 5,439 |
Contingent consideration |  | 0 |
Loss (gain) on sale of assets | 0 | 0 |
Operating income (loss) | (8,157) | (5,439) |
Depreciation and amortization expense | 227 | 230 |
Capital expenditures | 1,055 | 179 |
Total assets | 208,002 | 150,240 |
Revenues | $ 0 | $ 0 |

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