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v3.25.2

Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Nov. 22, 2024 | Sep. 30, 2024 | Jul. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Common Stock, Shares Authorized | 100,000,000 |  | 100,000,000 |  |  | 100,000,000 |
Treasury Stock Acquired, Average Cost Per Share | $ 157.16 | $ 132.92 | $ 174.25 | $ 132.92 |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  | 38,744 | 33,940 |  |  |
Share Repurchase Program, Authorized, Amount |  |  |  |  |  |  | $ 200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | 1,265,795 |  | 1,265,795 |  |  |  |
Contingent consideration | $ 338 | $ 43 | $ 1,016 | $ 78 |  |  |
Treasury Stock Acquired, Average Cost Per Share | $ 157.16 | $ 132.92 | $ 174.25 | $ 132.92 |  |  |
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  |  | 38,744 | 33,940 |  |  |
Residential [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contingent consideration | $ 0 | $ 0 | $ 0 | $ 35 |  |  |
Infrastructure Solutions [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Contingent consideration | 338 | 43 | 1,016 | 43 |  |  |
Phantom Share Units (PSUs) [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense | 173 | 134 | 492 | 364 |  |  |
us-gaap_PhantomShareUnitsPSUsMember_Employees |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based Payment Arrangement, Expense | $ 4,157 | $ 1,274 | $ 8,924 | $ 3,969 |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period |  |  | 103,599 |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 1,803 |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period |  |  | (94,752) |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number | 307,345 |  | 307,345 |  |  | 300,301 |
Stock Issued During Period, Shares, Treasury Stock Reissued |  |  | 94,752 | 82,180 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period |  |  | 1,803 |  |  |  |
Share-Based Payment Arrangement, Option |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Options exercised, shares |  |  | 1,000 |  |  |  |
Equity Incentive Plan [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized | 3,750,000 |  | 3,750,000 |  |  |  |
Repurchase Agreements [Member] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Treasury Stock, Shares, Acquired | 33,900 | 157,505 | 173,262 | 157,505 |  |  |
Amended Equity Incentive Plan |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized |  |  |  |  | 750,000 |  |

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