Operating Segments (Tables)

6 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

Segment information for the three and six months ended March 31, 2023 and 2022 is as follows:

		Three Months Ended March 31, 2023
		Communications		Residential		Infrastructure Solutions		Commercial & Industrial		Corporate		Total
Revenues		$	141,120	$	306,112	$	52,616	$	69,033	$	—	$	568,881
Cost of services		115,957		251,281		38,421		62,296		—		467,955
Gross profit		25,163		54,831		14,195		6,737		—		100,926
Selling, general and administrative		13,386		37,999		5,990		6,400		5,574		69,349
Contingent consideration		—		69		—		—		—		69
Gain on sale of assets		(3)		—		—		(99)		—		(102)
Operating income (loss)		$	11,780	$	16,763	$	8,205	$	436	$	(5,574)	$	31,610
Other data:
	Depreciation and amortization expense	$	502	$	4,557	$	1,326	$	412	$	67	$	6,864
	Capital expenditures	$	480	$	2,379	$	560	$	546	$	—	$	3,965
	Total assets	$	188,937	$	389,946	$	173,621	$	87,721	$	48,863	$	889,088

		Three Months Ended March 31, 2022
		Communications		Residential		Infrastructure Solutions		Commercial & Industrial		Corporate		Total
Revenues		$	130,639	$	260,406	$	41,733	$	68,815	$	—	$	501,593
Cost of services		119,518		214,862		34,672		74,034		—		443,086
Gross profit (loss)		11,121		45,544		7,061		(5,219)		—		58,507
Selling, general and administrative		10,978		33,576		6,391		8,448		4,037		63,430
Contingent consideration		—		69		—		—		—		69
Gain on sale of assets		(7)		—		(28)		(33)		—		(68)
Operating income (loss)		$	150	$	11,899	$	698	$	(13,634)	$	(4,037)	$	(4,924)
Other data:
	Depreciation and amortization expense	$	362	$	3,721	$	1,385	$	647	$	41	$	6,156
	Capital expenditures	$	750	$	6,707	$	823	$	840	$	168	$	9,288
	Total assets	$	171,929	$	363,921	$	150,276	$	99,262	$	45,851	$	831,239