Fair Value Measurements - Narrative (Details) $ in Thousands				1 Months Ended		3 Months Ended		9 Months Ended		13 Months Ended
	Nov. 01, 2023 USD ($) payment	Jul. 03, 2023 USD ($) payment	Dec. 02, 2021 USD ($) payment	Sep. 30, 2024 USD ($)	Apr. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Apr. 30, 2024 USD ($) payment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income						$ 626	$ 377	$ 1,734	$ 624
Number of payments to former owners | payment										2
Payment to former owners				$ 500	$ 3,000					$ 3,000
Change in fair value of contingent consideration						610	161	2,344	464
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Loss) gain on change in fair value of interest rate swap						(300)	100	(100)	200
Other Noncurrent Assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of the interest rate swap				100		100		100
Jake Marshall Transaction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability			$ 6,000
Change in fair value of contingent consideration						600	100	2,300	500
Jake Marshall Transaction | Earn Out Payment Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability			$ 3,000
Number of earnout tranches | payment			2
Earnout period			12 months
Jake Marshall Transaction | Earn Out Payment Two | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies			$ 10,000
Jake Marshall Transaction | Earn Out Payment Two | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies			8,000
Jake Marshall Transaction | Earn Out Payment One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability			$ 3,000
Number of earnout tranches | payment			2
Earnout period			12 months
Jake Marshall Transaction | Earn Out Payment One | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies			$ 10,000
Jake Marshall Transaction | Earn Out Payment One | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies			8,000
ACME Industrial piping LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability		$ 2,500		1,500		1,500		1,500
ACME Industrial piping LLC | Earn Out Payment Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability		$ 2,000
Number of earnout tranches | payment		2
Earnout period		12 months
ACME Industrial piping LLC | Earn Out Payment Two | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies		$ 2,500
ACME Industrial piping LLC | Earn Out Payment One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability		$ 500
Number of earnout tranches | payment		2
Earnout period		12 months
ACME Industrial piping LLC | Earn Out Payment One | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies		$ 2,000
Industrial Air Transaction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability	$ 6,500			3,200		3,200		3,200
Industrial Air Transaction | Earn Out Payment Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability	$ 3,500
Number of earnout tranches | payment	2
Earnout period	12 months
Industrial Air Transaction | Earn Out Payment Two | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies	$ 8,800
Industrial Air Transaction | Earn Out Payment One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability	$ 3,000
Number of earnout tranches | payment	2
Earnout period	12 months
Industrial Air Transaction | Earn Out Payment One | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross profits from acquired companies	$ 7,600
Kent Island Transaction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, liability				$ 4,400		4,400		4,400
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest income						$ 600	$ 400	$ 1,700	$ 600
Level 3 | Jake Marshall Transaction | Contingent Consideration Liability
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of earnout payments			$ 3,100
Level 3 | ACME Industrial piping LLC | Maximum | Contingent Consideration Liability | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments, measurement input				0.2164		0.2164		0.2164
Level 3 | ACME Industrial piping LLC | Minimum | Contingent Consideration Liability | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments, measurement input				0.1296		0.1296		0.1296
Level 3 | Industrial Air Transaction | Maximum | Contingent Consideration Liability | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments, measurement input				0.1368		0.1368		0.1368
Level 3 | Kent Island Transaction | Contingent Consideration Liability | Measurement Input, Discount Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Earnout payments, measurement input				0.149		0.149		0.149
Level 3 | A&R Wintrust Term Loan - term loan payable in quarterly installments of principal, plus interest through February 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt				$ 10,000		$ 10,000		$ 10,000