v3.26.3
Segment Information - Reconciliation of Segment Measure to Income Before Expense from Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Segment Reporting [Line Items]        
Total Reportable Segments $ 46,798 $ 47,131 $ 120,730 $ 133,286
Corporate and Other (10,895) (13,470) (35,124) (41,010)
Interest expense, net (5,564) (5,039) (16,501) (14,872)
Depreciation and amortization (12,599) (12,958) (37,932) (39,015)
Stock-based compensation (9,733) (9,220) (28,424) (33,777)
Acquisition costs [1] (151) (754) (369) (1,790)
Fair value changes in financial instruments [2] 1,031 10,354 2,273 18,394
Fair value changes in business acquisition contingencies 0 (13) 697 (844)
Rebranding expenses (587) 0 (3,110) 0
Proceeds from insurance settlement related to business combination [3] 3,700 0 3,700 0
Other losses or expenses [4] (741) (372) (3,356) (1,857)
Income before expense from income taxes $ 11,259 $ 15,659 $ 2,584 $ 18,515
[1] Includes financial and tax diligence, consulting, legal, valuation, accounting, travel and acquisition-related incentives related to the Company's acquisition and integration activity.
[2] The three and nine months ended September 30, 2026 consist of the change in fair value of the interest rate swap instruments. The three and nine months ended September 30, 2025 consist primarily of the change in fair value of the interest rate swap instruments and the embedded derivative attached to the Series A-2 preferred stock.
[3] Proceeds from a representations and warranties insurance settlement related to a previously completed acquisition.
[4] The three months ended September 30, 2026 consist primarily of third-party costs associated with a global IT migration and expenses associated with the Board-led strategic review. The nine months ended September 30, 2026 consist primarily of severance costs related to organizational restructuring of business lines within the Company's former Assessment, Permitting and Response and Remediation and Reuse segments, third-party costs associated with a global IT migration, and expenses associated with the Board-led strategic review. The three months ended September 30, 2025 consist primarily of severance costs. The nine months ended September 30, 2025 consist primarily of the aforementioned severance costs, non-recurring costs incurred to restructure the Company's renewable energy business, third party expenses associated with the independent review and analysis of assertions in a short seller report regarding the Company, and costs to centralize certain back-office functions.