Acquisitions - Schedule of Allocation of Fair Value of Assets and Liabilities (Details) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended	9 Months Ended	10 Months Ended	12 Months Ended	13 Months Ended
	Dec. 02, 2024	Sep. 03, 2024	Mar. 31, 2025	Dec. 31, 2024	Jun. 30, 2025	Sep. 30, 2025	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2025	Dec. 31, 2023
Fair value of liabilities assumed:
Goodwill				$ 33,034		$ 69,745	$ 69,745	$ 33,034	$ 69,745	$ 16,374
Measurement Period Adjustments, Goodwill					$ 100
Pioneer Power Inc.
Consideration:
Cash	$ 66,612
Total Consideration	66,612
Fair value of assets acquired:
Cash and cash equivalents	961
Accounts receivable, including retainage	18,416
Contract assets	4,176
Other current assets	58
Property and equipment	6,291
Intangible assets	16,200
Amount attributable to assets acquired	46,102
Fair value of liabilities assumed:
Accounts payable, including retainage	8,071
Accrued expenses and other current liabilities	1,527
Contract liabilities	6,506
Amount attributable to liabilities assumed	16,104
Goodwill	36,614
Consolidated Mechanical
Consideration:
Cash	23,591					23,594
Measurement Period Adjustments, Cash							3
Earnout provision	757					757
Measurement Period Adjustments, Total Consideration							3
Total Consideration	24,348					24,351
Fair value of assets acquired:
Cash and cash equivalents	390					390	390		390
Accounts receivable, including retainage	3,128					3,128	3,128		3,128
Contract assets	233					233	233		233
Other current assets	64					64	64		64
Property and equipment	548					548	548		548
Intangible assets	10,100					10,100	10,100		10,100
Amount attributable to assets acquired	14,463					14,463	14,463		14,463
Fair value of liabilities assumed:
Accounts payable, including retainage	291					291	291		291
Accrued expenses and other current liabilities	461					461	461		461
Contract liabilities	480					480	480		480
Amount attributable to liabilities assumed	1,232					1,232	1,232		1,232
Goodwill	$ 11,117					11,120	11,120		11,120
Measurement Period Adjustments, Goodwill					$ 100	3	3
Kent Island Mechanical, Inc.
Consideration:
Cash		$ 14,603				15,274
Measurement Period Adjustments, Cash									671
Earnout provision		4,381				4,381
Measurement Period Adjustments, Total Consideration									671
Total Consideration		18,984				19,655
Fair value of assets acquired:
Cash and cash equivalents		1,887				1,887	1,887		1,887
Accounts receivable, including retainage		10,376				10,376	10,376		10,376
Contract assets		1,457				1,363	1,363		1,363
Measurement Period Adjustments, Contract Assets									(94)
Property and equipment		434				434	434		434
Intangible assets		10,700				10,700	10,700		10,700
Amount attributable to assets acquired		24,854				24,760	24,760		24,760
Measurement Period Adjustments, Assets									(94)
Fair value of liabilities assumed:
Accounts payable, including retainage		4,586
Accrued expenses and other current liabilities		1,269				1,269	1,269		1,269
Contract liabilities		4,828				4,828	4,828		4,828
Amount attributable to liabilities assumed		10,683				10,683	10,683		10,683
Goodwill		$ 4,813				5,578	$ 5,578		5,578
Measurement Period Adjustments, Goodwill			$ 100	$ 700		$ 94		$ 700	$ 765