v3.22.4
Operating Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Sep. 30, 2022
Segment Reporting Information [Line Items]      
Cost of services $ 479,436 $ 400,782  
Gross profit 95,438 79,727  
Selling, general and administrative expenses 67,768 59,402  
Contingent consideration 69 69  
Loss (gain) on sale of assets (13,060) (5)  
Operating income (loss) 40,661 20,261  
Depreciation and amortization expense 6,388 6,214  
Capital expenditures 2,712 12,339  
Total assets 896,816 785,228 $ 934,709
Revenues 574,874 480,509  
Commercial and Industrial [Member]      
Segment Reporting Information [Line Items]      
Cost of services 56,653 60,378  
Gross profit 3,614 8,870  
Selling, general and administrative expenses 5,689 7,268  
Loss (gain) on sale of assets (13,035) (7)  
Operating income (loss) 10,960 1,609  
Depreciation and amortization expense 392 630  
Capital expenditures 723 245  
Total assets 79,548 94,157  
Revenues 60,267 69,248  
Communications [Member]      
Segment Reporting Information [Line Items]      
Cost of services 125,507 106,891  
Gross profit 21,738 20,498  
Selling, general and administrative expenses 12,297 11,384  
Loss (gain) on sale of assets 0 (6)  
Operating income (loss) 9,441 9,120  
Depreciation and amortization expense 430 359  
Capital expenditures 642 594  
Total assets 203,500 161,419  
Revenues 147,245 127,389  
Infrastructure Solutions [Member]      
Segment Reporting Information [Line Items]      
Cost of services 38,817 34,375  
Gross profit 10,467 7,721  
Selling, general and administrative expenses 5,761 6,059  
Loss (gain) on sale of assets (19) 0  
Operating income (loss) 4,725 1,662  
Depreciation and amortization expense 1,354 1,343  
Capital expenditures 639 10,316  
Total assets 163,201 145,722  
Revenues 49,284 42,096  
Residential [Member]      
Segment Reporting Information [Line Items]      
Cost of services 258,459 199,138  
Gross profit 59,619 42,638  
Selling, general and administrative expenses 39,051 30,995  
Contingent consideration 69 69  
Loss (gain) on sale of assets (6) 8  
Operating income (loss) 20,505 11,566  
Depreciation and amortization expense 4,144 3,852  
Capital expenditures 708 1,184  
Total assets 395,243 338,824  
Revenues 318,078 241,776  
Corporate Segment [Member]      
Segment Reporting Information [Line Items]      
Cost of services 0 0  
Gross profit 0 0  
Selling, general and administrative expenses 4,970 3,696  
Loss (gain) on sale of assets 0 0  
Operating income (loss) (4,970) (3,696)  
Depreciation and amortization expense 68 30  
Capital expenditures 0 0  
Total assets 55,324 45,106  
Revenues $ 0 $ 0