75000 - Document - Document and Entity Information
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link:definitionLink
75010 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION
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75020 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parenthetical)
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75030 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS)
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75040 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE AND REDEEMABLE SERIES A-2 PREFERRED STOCK AND STOCKHOLDERS' EQUITY
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75050 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
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995455 - Disclosure - Description of the Business and Basis of Presentation
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995465 - Disclosure - Summary of New Accounting Pronouncements
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995475 - Disclosure - Revenues and Accounts Receivable
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995485 - Disclosure - Prepaid and Other Current Assets
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995495 - Disclosure - Property and Equipment, Net
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995505 - Disclosure - Leases
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995515 - Disclosure - Business Acquisitions
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995525 - Disclosure - Goodwill and Intangible Assets
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995535 - Disclosure - Accounts Payable and Other Accrued Liabilities
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995545 - Disclosure - Accrued Payroll and Benefits
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995555 - Disclosure - Income Taxes
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995565 - Disclosure - Debt
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995575 - Disclosure - Fair Value of Financial Instruments
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995585 - Disclosure - Commitments and Contingencies
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995595 - Disclosure - Convertible and Redeemable Series A-2 Preferred Stock
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995605 - Disclosure - Stockholders' Equity
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995615 - Disclosure - Net Income (Loss) Per Share
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995625 - Disclosure - Stock-Based Plans and Compensation
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995635 - Disclosure - Segment Information
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995645 - Disclosure - Related-Party Transactions
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995655 - Disclosure - Defined Contribution Plan
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995665 - Disclosure - Subsequent Events
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995675 - Disclosure - Description of the Business and Basis of Presentation (Policies)
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995685 - Disclosure - Revenues and Accounts Receivable (Tables)
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995695 - Disclosure - Prepaid and Other Current Assets (Tables)
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995705 - Disclosure - Property and Equipment, Net (Tables)
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995715 - Disclosure - Leases (Tables)
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995725 - Disclosure - Business Acquisitions (Tables)
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995735 - Disclosure - Goodwill and Intangible Assets (Tables)
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995745 - Disclosure - Accounts Payable and Other Accrued Liabilities (Tables)
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995755 - Disclosure - Accrued Payroll and Benefits (Tables)
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995765 - Disclosure - Debt (Tables)
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995775 - Disclosure - Fair Value of Financial Instruments (Tables)
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995785 - Disclosure - Stockholders' Equity (Tables)
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995795 - Disclosure - Net Income (Loss) Per Share (Tables)
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link:calculationLink
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995805 - Disclosure - Stock-Based Plans and Compensation (Tables)
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995815 - Disclosure - Segment Information (Tables)
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995825 - Disclosure - Description of the Business and Basis of Presentation - Additional Information (Details)
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995835 - Disclosure - Revenues and Accounts Receivable - Schedule of Contract Balances (Details)
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995845 - Disclosure - Revenues and Accounts Receivable - Additional Information (Details)
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995855 - Disclosure - Revenues and Accounts Receivable - Additional Information (Details1)
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995855 - Disclosure - Revenues and Accounts Receivable - Additional Information (Details1) [Default]
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995865 - Disclosure - Revenues and Accounts Receivable - Schedule of Accounts Receivable, Net (Details)
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995875 - Disclosure - Revenues and Accounts Receivable - Schedule of Allowance for Credit Losses (Details)
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995885 - Disclosure - Prepaid and Other Current Assets - Schedule of Prepaid and Other Current Assets (Details)
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995895 - Disclosure - Property and Equipment, Net - Property and Equipment, Net (Details)
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995905 - Disclosure - Property and Equipment, Net - Additional Information (Details)
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link:calculationLink
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995915 - Disclosure - Leases - Additional Information (Details)
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995925 - Disclosure - Leases - Summary of Components of Lease Expense (Details)
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995925 - Disclosure - Leases - Summary of Components of Lease Expense (Details) [Default]
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995935 - Disclosure - Leases - Summary of Supplemental Cash Flow Information Related To Leases (Details)
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995945 - Disclosure - Leases - Summary of Weighted Average Remaining Lease Terms and Weighted Average Discount Rates (Details)
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995955 - Disclosure - Leases - Summary of Maturities of Lease Liabilities (Details)
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995965 - Disclosure - Leases - Summary of Maturities of Lease Liabilities (Details) 2
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995975 - Disclosure - Business Acquisitions - Additional Information (Details)
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995985 - Disclosure - Business Acquisitions - Summary of Elements of Preliminary Purchase Price of Acquisitions (Details)
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995995 - Disclosure - Business Acquisitions - Summary of Elements of Preliminary Purchase Price of Acquisitions (Parenthetical) (Details)
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996005 - Disclosure - Business Acquisitions - Summary of Purchase Price Attributable to Acquisitions (Details)
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996015 - Disclosure - Business Acquisitions - Summary of Supplemental Unaudited Pro-Forma Information (Details)
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996025 - Disclosure - Goodwill and Intangible Assets - Schedule of Amounts Related to Goodwill (Details)
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996035 - Disclosure - Goodwill and Intangible Assets - Schedule of Amounts Related to Finite-Lived Intangible Assets (Details)
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996045 - Disclosure - Goodwill and Intangible Assets - Additional Information (Details)
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996055 - Disclosure - Goodwill and Intangible Assets - Schedule of Future Amortization Expense (Details)
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996065 - Disclosure - Accounts Payable and Other Accrued Liabilities - Summary of Accounts Payable and Other Accrued Liabilities (Details)
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link:calculationLink
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996075 - Disclosure - Accrued Payroll and Benefits - Schedule of Accrued Payroll and Benefits (Details)
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link:calculationLink
link:definitionLink
996085 - Disclosure - Income Taxes - Additional Information (Details)
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link:calculationLink
link:definitionLink
996095 - Disclosure - Debt - Schedule of Debt (Details)
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996105 - Disclosure - Debt - Schedule of Debt (Details) 2
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link:calculationLink
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996115 - Disclosure - Debt - Additional Information (Details)
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996125 - Disclosure - Debt - Summary of 2025 Credit Facility Term Loan and Revolving Line of Credit Interest Rate Subject to Leverage Ratio and SOFR (Details)
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996135 - Disclosure - Debt - Schedule of Interest Rate Swap Agreements (Details)
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996145 - Disclosure - Debt - Schedule of Aggregate Annual Maturities of Long-Term Debt (Details)
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996155 - Disclosure - Debt - Schedule of Aggregate Annual Maturities of Long-Term Debt (Details) 2
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996165 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Details)
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link:calculationLink
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996175 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Instruments Measured at Fair Value on Recurring Basis (Details)
link:presentationLink
link:calculationLink
link:definitionLink
996185 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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link:calculationLink
link:definitionLink
996195 - Disclosure - Convertible and Redeemable Series A-2 Preferred Stock - Additional Information (Details)
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link:calculationLink
link:definitionLink
996195 - Disclosure - Convertible and Redeemable Series A-2 Preferred Stock - Additional Information (Details) [Default]
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link:calculationLink
link:definitionLink
996205 - Disclosure - Stockholder's Equity - Additional Information (Details)
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link:calculationLink
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996215 - Disclosure - Stockholders' Equity - Summary of Number of Shares Authorized to be Issued and Available for Grant (Details)
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996225 - Disclosure - Stockholders' Equity - Summary of Number of Shares Authorized to be Issued and Available for Grant (Parenthetical) (Details)
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996235 - Disclosure - Net Income (Loss) Per Share - Computation of Basic and Diluted Net Loss Per Share Attributable to Common Stockholders (Details)
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996245 - Disclosure - Net Income (Loss) Per Share - Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share Attributable to Common Stockholders (Details)
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996255 - Disclosure - Net Income (Loss) Per Share - Common Stock Equivalents Excluded from Calculation of Diluted Net Loss per Share Attributable to Common Stockholders (Parenthetical) (Details)
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link:calculationLink
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996265 - Disclosure - Stock-Based Plans and Compensation - Additional Information (Details)
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link:calculationLink
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996275 - Disclosure - Stock-Based Plans and Compensation - Schedule of Stock-based Compensation Expense (Details)
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996275 - Disclosure - Stock-Based Plans and Compensation - Schedule of Stock-based Compensation Expense (Details) [Default]
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996285 - Disclosure - Stock-Based Plans and Compensation - Summary of Number of Shares Authorized to be Issued and Available for Grant (Details)
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996295 - Disclosure - Stock-Based Plans and Compensation - Summary of Number of Shares Authorized to be Issued and Available for Grant (Parenthetical) (Details)
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996305 - Disclosure - Stock-Based Plans and Compensation - Schedule of Restricted Stock Activity (Details)
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996315 - Disclosure - Stock-Based Plans and Compensation - Summary of Performance Hurdles (Details)
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996325 - Disclosure - Stock-Based Plans and Compensation - Summary of Stock Option Activity (Details)
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996335 - Disclosure - Stock-Based Plans and Compensation - Schedule of Common Stock Reserved for Future Issuance (Details)
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996345 - Disclosure - Stock-Based Plans and Compensation - Schedule of Common Stock Reserved for Future Issuance (Parenthetical) (Details)
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996355 - Disclosure - Segment Information - Additional Information (Details)
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996365 - Disclosure - Segment Information - Components of Segment Revenues, Other Segment Items and Segment Adjusted EBITDA (Details)
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996375 - Disclosure - Segment Information - Reconciliation of Segment Measure to Income (Loss) Before Expense from Income Taxes (Details)
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996385 - Disclosure - Segment Information - Reconciliation of Segment Measure to Income (Loss) Before Expense from Income Taxes (Details) 2
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996395 - Disclosure - Segment Information - Schedule of Revenues by Geographic Location (Details)
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996405 - Disclosure - Segment Information - Schedule of Long-lived Assets by Geographic Location (Details)
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996415 - Disclosure - Related-Party Transactions - Additional Information (Details)
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996425 - Disclosure - Defined Contribution Plan - Additional Information (Details)
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996425 - Disclosure - Defined Contribution Plan - Additional Information (Details) [Default]
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996435 - Disclosure - Subsequent Events - Additional Information (Details)
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Line Of Credit Facility [Line Items]
Line of Credit Facility [Line Items]
Scenario [Axis]
Assumptions used in calculating fair value of the warrant option
Period between issuance and expiration of outstanding warrant
Warrants and Rights Outstanding, Term
Common Stock, Capital Shares Reserved for Future Issuance
Shares reserved for future issuance
Common stock reserved for future issuance
Schedule of Accrued Payroll and Benefits
Schedule of Accrued Liabilities [Table Text Block]
Debt
Debt Disclosure [Text Block]
Operating Leases, Total discounted future minimum lease payments
Operating Lease, Liability
Operating Lease, Liability, Total
Total unrecognized stock-based compensation expense related to unvested options, restricted stock and stock appreciation rights granted under the Plans
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Share Repurchase Program, Authorized, Amount
Stock repurchase program authorized amount
Percentage of proceeds of insurance or condemnation, subject to customary reinvestment rights
Percentage Of Proceeds Of Insurance Or Condemnation Subject To Customary Reinvestment Rights
Percentage of proceeds of insurance or condemnation, subject to customary reinvestment rights.
Long-Term Line of Credit
Total debt
Total debt
Line of credit, outstanding balance
Long-Term Debt, Maturity, Year Three
2029
Debt Instrument, Basis Spread on Variable Rate
Interest rate
Commitments and Contingencies
Commitments and contingencies
Weighted-average number of shares of common stock outstanding - diluted
Weighted Average Number of Shares Outstanding, Diluted
Weighted average common shares outstanding - Diluted
Weighted average common shares outstanding - Diluted
Payment through cash or common stock
Business Combination Payment through cash or common stock
Business combination payment through cash or common stock.
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Stock-based compensation
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
Allowance for doubtful accounts receivable recoveries (write offs).
Allowance For Doubtful Accounts Receivable Recoveries Write Offs
Charged to Allowance
Minimum
Minimum [Member]
Debt Instrument Two [Member]
Debt instrument two.
Debt Instrument Two
Assets, Noncurrent [Abstract]
Non-current assets
Long-Term Debt, Maturity, Year Two
2028
Letter of Credit
Letter of Credit [Member]
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Table]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table]
Business combination, recognized identifiable assets acquired and liabilities assumed, current assets, receivables.
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables and Contract Assets
Accounts receivable and contract assets
Revenues and Accounts Receivable
Revenues And Accounts Receivable [Text Block]
Entire disclosure of revenues and accounts receivable.
Finance Lease, Liability, to be Paid, Year Two
Finance Leases, 2028
Fair Value, Recurring
Fair Value, Recurring [Member]
Matrix
Matrix [Member]
Matrix member.
Revenues
Business Combination, Pro Forma Information, Pro Forma Revenue
Summary of Purchase Price Attributable to Acquisitions
Business Combination, Recognized Asset Acquired and Liability Assumed [Table Text Block]
Summary of Supplemental Cash Flow Information Related To Leases
Schedule Of Cash Flow Supplemental Disclosures Related To Leases Table [Text Block]
Schedule of cash flow supplemental disclosures related to leases.
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Shares, vesting rights, percentage
shares, vesting rights, percentage
Common Stock, Shares, Issued, Total
Common stock, shares issued
Common Stock, Shares, Issued
Segment Reporting Information [Line Items]
Segment Reporting [Line Items]
Debt Instrument, Face Amount
Notional amount
Income tax expense
Income Tax Expense (Benefit)
Income Tax Expense (Benefit), Total
INCOME TAX BENEFIT (EXPENSE)
Income tax expense
Income tax (benefit) expense
Foreign currency translation impact
Goodwill, Foreign Currency Translation, Gain (Loss)
Allan Dicks [Member]
Allan Dicks.
Allan Dicks
Restricted Stock Units (RSUs) [Member]
RSUs
Pricing Tier4
Pricing tier 4.
Pricing Tier4 [Member]
Remaining contractual terms
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Remaining Contractual Terms
Share based compensation arrangement by share based payment award equity instruments other than options remaining contractual terms.
Fair value changes in business acquisition contingencies
Fair value changes in contingent liabilities.
Fair Value Changes In Contingent Liabilities
Repayments of Lines of Credit
Repayment of the revolving line of credit
Environmental standards, inc. and industrial automation group, inc..
Environmental Standards, Inc. and Industrial Automation Group, Inc. [Member]
EnvStd and IAG
Operating Segments
Operating Segments [Member]
Finite-Lived Intangible Assets, Major Class Name
Intangible Asset, Finite-Lived, Class [Domain]
Line of credit facility, maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Treasury Stock, Common, Value
Treasury stock, at cost; 376,313 and 0 shares at March 31, 2026 and December 31, 2025, respectively
Treasury stock, at cost; 1,627,763 and 0 shares at June 30, 2026 and December 31, 2025, respectively
Subsequent Event Type [Domain]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Expirations in Period
Options to Purchase Common Stock Expired
Fair value measurement with unobservable inputs reconciliation recurring basis liability reclass of long term to short term contingent liabilities.
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Reclass Of Long Term To Short Term Contingent Liabilities
Reclass of long term to short term contingent liabilities
Long-term debt, less current portion
Long-Term Debt and Lease Obligation
Long-term Debt and Lease Obligation, Total
Operating Leases, Less imputed interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Weighted average remaining contract life
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted-Average Remaining Contractual Term
Property and Equipment, Net
Property, Plant, and Equipment [Text Block]
Measurement And Analysis [Member]
Measurement and Analysis
Measurement and analysis.
Aircraft
Air Transportation Equipment [Member]
Nonoperating Income (Expense)
Total other income (expense), net
Income Statement [Abstract]
Shareholders' Equity and Share-Based Payments [Text Block]
Stockholders' Equity
Reclass of short term to long term contingent liabilities
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Reclass Of Short Term To Long Term Contingent Liabilities
Fair value measurement with unobservable inputs reconciliation recurring basis liability reclass of short term to long term contingent liabilities.
Entity number of employees
Entity Number of Employees
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Awards forfeited/cancelled, Shares
Forfeited/cancelled, Shares
Summary of Components of Lease Expense
Lease, Cost [Table Text Block]
Vesting
Vesting [Axis]
2013 Stock Incentive Plan
Two Thousand Thirteen Stock Incentive Plan [Member]
Two thousand thirteen stock incentive plan.
Schedule Of Finite Lived Intangible Assets [Table]
Intangible Asset, Finite-Lived [Table]
Earnings Per Share, Basic, Total
Earnings Per Share, Basic
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS - BASIC
Net income (loss) per share attributable to common stockholders - Basic
Corporate and Other
Corporate Segment and Other Operating Segment [Member]
Adjusted Earnings Before Interest Taxes Depreciation And Amortization
Segment Adjusted EBITDA
Adjusted earnings before interest taxes depreciation and amortization.
Adjusted EBITDA
Total Reportable Segments
Document Period End Date
Document Period End Date
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year
2026 (remaining)
Interest on lease liabilities
Finance Lease, Interest Expense
Accrued Payroll and Benefits
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Series B Preferred Stock [Member]
Series B Preferred Stock
Total Intangible Assets—Net
Intangible Asset, Finite-Lived, after Accumulated Amortization
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net, Ending Balance
Other intangible assets, net
Restricted stock units awards
Restricted Stock Units Awards [Member]
Restricted stock units awards.
Payments to Acquire Property, Plant, and Equipment
Payments to Acquire Property, Plant, and Equipment, Total
Purchases of property and equipment
Weighted-Average Exercise Price per Share Granted
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Common stock, shares authorized
Common Stock, Shares Authorized
Summary of 2025 Credit Facility Term Loan and Revolving Line of Credit Interest Rate Subject to Leverage Ratio and Benchmark Spread
Summary Of Credit Facility Interest Rate Subject To Leverage Ratio And Benchmark Spread [Table Text Block]
Summary of credit facility interest rate subject to leverage ratio and benchmark spread.
Number of shares entitles to purchase
Number of Shares Entitles to Purchase
Number of shares entitles to purchase.
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two
2028
Statement of Stockholders' Equity [Abstract]
Finance lease right-of-use assets
Finance Lease, Right-of-Use Asset, after Accumulated Amortization
Finance Lease, Right-of-Use Asset, after Accumulated Amortization, Total
Finance lease right-of-use asset, net
Deposits
Deposits Assets, Current
Corporate and Other
Corporate and Other
Corporate and other.
Prepaid and other current assets
Prepaid and other current assets
Prepaid Expense and Other Assets, Current
Twenty Twenty Five Credit Facility Term Loan [Member]
Twenty twenty five credit facility term loan.
2025 Credit Facility Term Loan
EAI
Environmental Alliance, Inc. [Member]
Environmental Alliance, Inc. [Member]
EPIC, 2DOT, ETA, Paragon, Spirit and Origins
Epic Environmental Pty LTD Two Dot Consulting, LLC Engineering & Technical Associates, Inc. Paragon Soil and Environmental Consulting Inc. Spirit Environmental, LLC. And Origins Laboratory, Inc. [Member]
Epic Environmental Pty LTD Two Dot Consulting, LLC Engineering & Technical Associates, Inc. Paragon Soil and Environmental Consulting Inc. Spirit Environmental, LLC. And Origins Laboratory, Inc.
Dividends [Domain]
Non-Recurring Rebranding Expenses
Non-recurring rebranding expenses.
Non-recurring rebranding expenses
Temporary Equity Disclosure [Abstract]
Summary of New Accounting Pronouncements
Accounting Standards Update and Change in Accounting Principle [Text Block]
Rule 10B51 Trading Plan Nine [Member]
Rule 10B51 Trading Plan Nine.
Rule 10b5-1 Trading Plan Purchase of Common Stock with Exercise of Stock Options between March 2, 2026 and March 3, 2026
Debt Instrument, Interest Rate, Stated Percentage
Fixed rate
Payment for Contingent Consideration Liability, Financing Activities
Payment of contingent consideration and other purchase price true ups
Schedule of Future Amortization Expense
Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Aggregate Intrinsic Value of In-The-Money Options Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Twenty Twenty Five Revolving Credit Facility [Member]
Twenty twenty five revolving credit facility.
2025 Credit Facility Revolver
Commitments and contingencies.
Commitments And Contingencies [Table]
Commitments And Contingencies [Table]
Rule 10b5-1 Trading Plan Four [Member]
Rule 10b5-1 Trading Plan Four.
Rule 10b5-1 Trading Plan Sale of Common Stock between November 13, 2025 and May 12, 2026
Assets
Total assets
Security12b Title
Title of 12(b) Security
Goodwill
Ending balance
Beginning balance
Goodwill
Goodwill, Total
Frontier and EAI
Frontier Analytical Laboratories and Environmental Alliance Inc [Member]
Frontier analytical laboratories and environmental alliance inc.
Nasym Afsari [Member]
Nasym Afsari.
Nasym Afsari
Temporary Equity [Line Items]
Temporary Equity [Line Items]
Payments for Repurchase of Common Stock
Repurchases of common stock
Business combination, earn-out payment, maximum
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Outstanding, Shares, Ending Balance
Outstanding, Shares, Beginning Balance
Shares outstanding
Business Acquisitions Contingent Consideration, Current
Business Acquisitions Contingent Consideration Current [Member]
Business acquisitions contingent consideration, current.
Options to Purchase Common Stock Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross
Awards granted, Shares
Vehicles
Vehicles [Member]
Title of Individual
Title and Position [Domain]
Finance Lease, Liability, to be Paid, Year Three
Finance Leases, 2029
Customer Concentration Risk
Customer Concentration Risk [Member]
Operating cash flows used in operating leases
Operating Lease, Payments
Antidilutive Securities, Name
Antidilutive Securities, Name [Domain]
Annual effective tax rate ("ETR") from continuing operations
Effective Income Tax Rate Reconciliation, Percent
Effective Income Tax Rate Reconciliation, Percent, Total
Variable Rate
Variable Rate [Axis]
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year
Operating Leases, Remainder of 2026
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Total debt
Long-Term Debt and Lease Obligation, Including Current Maturities
Cash paid for interest
Interest Paid, Excluding Capitalized Interest, Operating Activity
Goodwill [Line Items]
Goodwill [Line Items]
Noncash Contribution Expense
Non-cash leases expense
Current liabilities
Business Combination, Recognized Liability Assumed, Liability, Current
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Total
Current liabilities
Lessee, Operating Lease, Liability, to be Paid, Year One
Operating Leases, 2027
Frontier Analytical Laboratories Environmental Alliance Inc Green Path Energy Limited [Member]
Frontier Analytical Laboratories Environmental Alliance Inc Green Path Energy Limited [Member]
Frontier, EAI and GreenPath
Finance leases
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability
Number of customers more than ten percentage of Accounts receivable.
Number of Customers More than Ten Percentage of Accounts Receivable
Number of customers more than 10% of Accounts receivable
Changes in fair value
Fair value changes in financial instruments
Change in Unrealized Gain (Loss) on Fair Value Hedging Instruments
Weighted Average Remaining Contract Life (in Years) Outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term
Other current assets
Business Combination, Recognized Asset Acquired, Other Asset, Current
Customer Relationships
Customer Relationships [Member]
Debt Instrument, Periodic Payment, Total
Debt Instrument, Periodic Payment
Installment repayment amount
Other Purchase Price Components
Business Combination Consideration Transferred Other Purchase Price Components
Business Combination Consideration Transferred Other Purchase Price Components
Segment Reporting [Table Text Block]
Components of Segment Revenues, Other Segment Items and Segment Adjusted EBITDA
Increase (Decrease) in Operating Lease Liability
Change in operating leases
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four
2030
Total stockholders’ equity
Beginning balance
Ending balance
Equity, Attributable to Parent
Lessee operating lease cost.
Lessee Operating Lease Cost
Lease cost
Treasury Stock
Treasury Stock, Common [Member]
Thereafter
Finite-lived intangible assets amortization expense after year four.
Finite Lived Intangible Assets Amortization Expense After Year Four
2026 and thereafter
Other assets
Other Assets, Noncurrent
Other Assets, Noncurrent, Total
Income Taxes
Income Tax Disclosure [Text Block]
Earnings Per Share [Text Block]
Net Income (Loss) Per Share
Schedule of Prepaid and Other Current Assets
Schedule Of Prepaid And Other Current Assets Table [Text Block]
Schedule of prepaid and other current assets.
Number of reportable segments
Number of Reportable Segments
Basis of Presentation
Basis of Accounting, Policy [Policy Text Block]
Non cash acquisition contingent consideration paid in shares.
Non Cash Acquisition Contingent Consideration Paid In Shares
Acquisitions contingent consideration paid in common stock
Acquisitions contingent consideration paid in common stock
Office Equipment [Member]
Office Equipment
Credit Facility
Credit Facility [Axis]
Adjustment of preferred stock issuance costs
Adjustment Of Preferred Stock Issuance Costs
Adjustment of preferred stock issuance costs
SAR stock price performance hurdle three.
SAR Stock Price Performance Hurdle Three [Member]
SAR Stock Price Performance Hurdle Three
Schedule of Common Stock Reserved for Future Issuance
Schedule Of Common Stock For Future Issuance Table [Text Block]
Schedule Of Common Stock for Future Issuance.
Significant Customer
Significant Customer [Member]
Significant customer.
Finance Leases, Less imputed interest
Finance Lease, Liability, Undiscounted Excess Amount
Share-Based Compensation Arrangement by Share-Based Payment Award, Accelerated Vesting, Number
Common stock issued upon vesting of performance SARs
Common stock issuances pursuant to exercises and vesting of equity awards, shares
Stock issued during period shares pursuant to stock options exercised and vested.
Stock Issued During Period Shares Pursuant to Stock Options Exercised and Vested
Common stock repurchased under stock repurchase program, Shares
Bad Debt Expense (Recovery)
(Recovery) provision for credit loss
Provision for bad debt
Par value per share
Temporary equity, par value per share
Temporary equity, par value
Two Dot Consulting LLC [Member]
Two Dot Consulting LLC [Member]
2DOT
Repayment of finance leases
Repayment Of Finance Leases
Repayment of finance leases.
Term Loan Facility
Term Loan Facility [Member]
Term loan facility.
Restricted Stock
Restricted Stock [Member]
Loan and aircraft security agreement
Loan and Aircraft Security Agreement [Member]
Loan and Aircraft Security Agreement
Revolving Line of Credit
Revolving Credit Facility [Member]
2021 Credit Facility Revolver
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value per Share Vested
Proceeds from Stock Options Exercised
Proceeds from issuance of common stock for exercised stock options
Payments to Acquire Intangible Assets
Proprietary software development and other software costs
Percentage of Outstanding Common Stock
Percentage of outstanding common stock.
Percentage of outstanding common stock
Geographical [Domain]
Remediation and Reuse Segment
Remediation And Reuse Segment [Member]
Remediation and reuse segment.
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three
2029
Debt instrument quarterly installment rate.
Debt instrument, quarterly installment rate
Schedule of Interest Rate Swap Agreements [Table Text Block]
Schedule of interest rate swap agreements.
Schedule of Interest Rate Swap Agreements
Schedule of Maturities of Long-Term Debt [Table Text Block]
Schedule of Aggregate Annual Maturities of Long-Term Debt (Excluding Current Portion)
Statistical Measurement [Axis]
Statistical Measurement
Schedule of Maturities of Lease Liabilities
Schedule Of Maturities Of Lease Liabilities Table [Text Block]
Schedule of maturities of lease liabilities.
Rule 10b5-1 Trading Plan Three [Member]
Rule 10b5-1 Trading Plan Three.
Rule 10b5-1 Trading Plan Purchase of Common Stock with Exercise of Stock Options between November 13, 2025 and May 12, 2026
Entity Interactive Data Current
Entity Interactive Data Current
Common Stock
Business Combination, Consideration Transferred, Equity Interest
Fair value vested in period
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value
Accrued payroll
Accrued Payroll Taxes, Current
Lessee, Operating Lease, Liability, to be Paid, Year Three
Operating Leases, 2029
Schedule Of Goodwill [Table]
Goodwill [Table]
Schedule of Stock-based Compensation Expense
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Common Stock, Value, Issued
Common Stock, Value, Issued, Total
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Ending Balance
Common stock, $0.000004 par value; authorized shares: 190,000,000 at June 30, 2026 and December 31, 2025; issued shares: 36,737,899 and 35,929,665 at June 30, 2026 and December 31, 2025, respectively; outstanding shares: 35,110,136 and 35,929,665 at June 30, 2026 and December 31, 2025, respectively
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Computation of Basic and Diluted Net Income (Loss) Per Share Attributable to Common Stockholders
Description of the Business and Basis of Presentation
Business Description and Basis of Presentation [Text Block]
Lessee operating and finance lease term
Lessee Operating And Finance Lease Term Of Contract
Lessee operating and finance lease term of contract.
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from Sale of Property, Plant, and Equipment, Total
Proceeds from the sale of property and equipment
Total liabilities
Liabilities
Cost of Revenue
Cost of Revenue, Total
Cost of revenues (exclusive of depreciation and amortization shown below)
Property and equipment
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total
Proceeds from Building Sale Leaseback
Proceeds from building sale leaseback.
Proceeds from building sale leaseback
Gross of deferred debt issuance cost
Less deferred debt issuance costs
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total
Deferred debt issuance cost
Second Anniversary
Share-Based Payment Arrangement, Tranche Two [Member]
Business Acquisitions
Business Combination [Text Block]
Fair value changes in business acquisition contingencies
Fair value changes in business acquisitions contingent consideration
Fair value changes in business acquisition contingencies
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Ending Balance
Conversion Option
Conversion Option [Member]
Conversion option.
Level 3
Fair Value, Inputs, Level 3 [Member]
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Preferred Stock Dividends, Income Statement Impact
Convertible and redeemable series A-2 preferred stock dividend
Convertible and Redeemable Series A-2 Preferred Stock dividend
Share price
Common stock value (per share)
Common stock share price
Pricing Tier1 [Member]
Pricing tier 1.
Pricing Tier1
Vesting [Domain]
Vesting
Liabilities, Noncurrent [Abstract]
Non-current liabilities
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]
Changes in operating assets and liabilities, net of acquisitions:
Shares of vested over period
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Shares Issued, Price Per Share
Share purchase price
Deferred Income Tax Liabilities, Net
Deferred Income Tax Liabilities, Net, Total
Deferred tax liabilities, net
Reclassifications [Text Block]
Reclassifications
Percentage of proceeds of debt, subject to customary exceptions
Percentage Of Proceeds Of Debt Subject To Customary Exceptions
Percentage of proceeds of debt subject to customary exceptions.
Variable Rate
Variable Rate [Domain]
Accumulated Amortization
Intangible Asset, Finite-Lived, Accumulated Amortization
Accounts Notes And Loans Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remediation and Reuse
Remediation And Reuse [Member]
Remediation and Reuse.
Beginning balance
Ending balance
Temporary Equity, Carrying Amount, Attributable to Parent
Redeemable series preferred stock
Covenants Not to Compete
Noncompete Agreements [Member]
Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Less: Accumulated depreciation
Related Party Transactions [Abstract]
Total operating lease cost
Operating Lease, Cost
Long-Lived Tangible Asset
Long-Lived Asset, Class [Axis]
Rule 10B51 Trading Plan Ten [Member]
Rule 10B51 Trading Plan Ten.
Rule 10b5-1 Trading Plan Purchase of Common Stock between November 10, 2025 and August 12, 2026
Percentage of proceeds of certain dispositions, subject to customary reinvestment rights
Percentage Of Proceeds Of Certain Dispositions Subject To Customary Reinvestment Rights
Percentage of proceeds of certain dispositions, subject to customary reinvestment rights.
Subsequent Events [Text Block]
Subsequent Events
Other Commitments, Description
Foreign exchange impact on cash balance
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Twenty Twenty One Credit Facility [Member]
2021 Credit Facility.
2021 Credit Facility Term Loan
2021 Credit Facility
Summary of Weighted Average Remaining Lease Terms and Weighted Average Discount Rates
Summary Of Weighted Average Remaining Lease Terms And Weighted Average Discount Rates Table [Text Block]
Summary of weighted average remaining lease terms and weighted average discount rates.
Follow-on Offering
Follow On Offering [Member]
Follow-on offering.
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Axis]
Short-term Debt, Type
Short-Term Debt, Type [Axis]
Property Plant And Equipment [Line Items]
Property, Plant, and Equipment [Line Items]
Business combination recognized identifiable assets acquired and liabilities assumed operating lease right of use asset net.
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Right-of-Use Asset Net
Operating lease right-of-use-asset
Percentage of dividend rate steps downs per year.
Percentage Of Dividend Rate Steps Downs Per Year
Percentage of dividend rate
Payments of Stock Issuance Costs
Payments of deferred offering costs
Payments of deferred financing costs
Base Rate
Base Rate Plus
Base Rate [Member]
Current operating lease liabilities
Current portion of operating lease liabilities
Operating Lease, Liability, Current
Concentration Risk Type
Concentration Risk Type [Domain]
Repayment of term loan
Repayments of Long-Term Lines of Credit
Customer
Customer [Domain]
Finance Lease Liability Payments Due Year Five And Thereafter
Finance lease liability payments due year five and thereafter.
Finance Leases, 2031 and thereafter
Total liabilities
Business Combination, Recognized Liability Assumed, Liability
Total liabilities
Liabilities and Equity
Total liabilities and Stockholders' Equity
Contract liabilities acquired through business acquisitions
Contracts With Customer Liabilities Acquired Through Business Acquisitions
Contracts with customer liabilities acquired through business acquisitions.
Long Term Purchase Commitment Amount During Period
Long term purchase commitment amount during period.
Purchase amount
Lessee, Operating Lease, Liability, to be Paid, Year Two
Operating Leases, 2028
Finite-Lived Intangible Assets by Major Class
Intangible Asset, Finite-Lived, Class [Axis]
Lessee Lease Description [Table]
Lessee, Lease, Description [Table]
Document Fiscal Period Focus
Document Fiscal Period Focus
Vesting frequency of period
Share Based Compensation Arrangement By Share Based Payment Award Vesting Frequency Of Period
Share based compensation arrangement by share based payment award vesting frequency of period.
Revenue remaining performance obligations
Revenue, Remaining Performance Obligation, Amount
Summary of Weighted Average Assumptions Used in Black-Sholes Option-pricing Model
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Depreciation and amortization
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation and amortization
Depreciation and amortization expense
Depreciation and amortization
Title of Individual
Title and Position [Axis]
Schedule Of Property Plant And Equipment [Table]
Property, Plant, and Equipment [Table]
2013 Plan
Two Thousand Thirteen Plan [Member]
Two thousand thirteen plan.
Matrix and GreenPath Energy LTD
Matrix and GreenPath Energy LTD [Member]
Matrix and GreenPath
CANADA
Canada
Sale of Stock [Axis]
Estimated Useful Life
Intangible Asset, Finite-Lived, Useful Life
Entity Current Reporting Status
Entity Current Reporting Status
Options to Purchase Common Stock Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Consulting And Treatment [Member]
Consulting and Treatment.
Consulting and Treatment
Class of Stock
Class of Stock [Domain]
Revenue
Revenue from Contract with Customer Benchmark [Member]
Accounts Payable, Current, Total
Accounts payable
Accounts Payable, Current
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share Attributable to Common Stockholders
Financial Instrument [Axis]
Increase (Decrease) in Other Noncurrent Assets
Other assets
Goodwill
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Goodwill
Business combination recognized identifiable assets acquired and liabilities assumed goodwill.
Document Transition Report
Document Transition Report
Twenty Twenty Five Credit Facility [Member]
Twenty Twenty Five Credit Facility.
2025 Credit Facility Term Loan
2025 Credit Facility
Assessment, Permitting and Response
Assessment Permitting And Response [Member]
Assessment permitting and response.
Liability Class
Liability Class [Axis]
Commitments and Contingencies Disclosure [Abstract]
Subsequent Event [Line Items]
Subsequent Event [Line Items]
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation [Abstract]
Cash, cash equivalents and restricted cash:
Liabilities, Current [Abstract]
Current liabilities
Share-Based Payment Arrangement [Abstract]
Net Leverage Ratio
Net Leverage Ratio
Net leverage ratio.
Total Assets, Beginning balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value
Level 3 Assets
Total Assets, Ending balance
Total Assets
Weighted average interest rate
Debt, Weighted Average Interest Rate
Common Stock
Common Stock [Member]
Accounting Standards Update and Change in Accounting Principle [Abstract]
Total assets
Business Combination, Recognized Asset Acquired, Asset
Proceeds from Lines of Credit
Proceeds from Lines of Credit, Total
Proceeds from revolving line of credit
Credit Facility
Credit Facility [Domain]
Statistical Measurement
Statistical Measurement [Domain]
Summary of Supplemental Unaudited Pro-Forma Information
Business Combination, Pro Forma Information [Table Text Block]
Defined contribution plan, description
Defined Contribution Plan, Description
Prepaid Expense, Current, Total
Prepaid expenses
Prepaid Expense, Current
Amended and Restated 2013 Stock Option Plan
Two Thousand Thirteen Stock Option Plan [Member]
Two thousand thirteen stock option plan.
Gross Balance
Intangible Asset, Finite-Lived, before Accumulated Amortization
Finite-Lived Intangible Assets, Gross, Total
Board of Directors
Director [Member]
Equity, Attributable to Parent [Abstract]
Stockholders' equity:
Weighted-average number of shares of common stock outstanding - basic
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted average common shares outstanding - Basic
Property, Plant, and Equipment [Abstract]
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year
Finance Leases, Remainder of 2026
ASSETS
Assets [Abstract]
Entity Central Index Key
Entity Central Index Key
Antidilutive Securities
Antidilutive Securities [Axis]
Aggregate Intrinsic Value of In-The-Money Options Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Line Of Credit Facility [Table]
Line of Credit Facility [Table]
Other current liabilities
Other Liabilities, Current
Other Liabilities, Current, Total
Consolidation Items
Consolidation Items [Axis]
Current Fiscal Year End Date
Current Fiscal Year End Date
Document Quarterly Report
Document Quarterly Report
Debt Instrument, Maturity Date
Expiration date
Net Income (Loss) Available to Common Stockholders, Diluted
Net income (loss) attributable to common stockholders - diluted
Net income (loss) attributable to common stockholders
Cash
Payments to Acquire Businesses, Gross
Business combination, paid in cash
Acquisition costs
Transaction costs related to business combinations
Business Combination, Acquisition-Related Cost, Expense
Cash
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent
Weighted-Average Exercise Price per Share Outstanding Beginning Balance
Weighted-Average Exercise Price per Share Outstanding Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Business Combination [Abstract]
Rule 10B51 Trading Plan One [Member]
Rule 10b5-1 Trading Plan One.
Rule 10b5-1 Trading Plan Sale of Common Stock on November 13, 2025
Percentage of prepayment fee for year two
Percentage of Prepayment Fee for Year Two
Percentage of prepayment fee for year two
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation
Net cash (used in) provided by operating activities
Entity Incorporation State Country Code
Entity Incorporation, State or Country Code
Earnings Per Share, Diluted, Total
Earnings Per Share, Diluted
NET LOSS PER SHARE ATTRIBUTABLE TO COMMON STOCKHOLDERS - DILUTED
Net income (loss) per share attributable to common stockholders - Diluted
Dividends
Dividends, Total
Accrued series A-2 preferred stock dividend
Preferred stock, dividends accrued
Defined Contribution Plan Disclosure [Line Items]
Defined Contribution Plan Disclosure [Line Items]
Preferred stock, par value
Preferred Stock, Par or Stated Value Per Share
Weighted average discount rate, Operating Leases
Operating Lease, Weighted Average Discount Rate, Percent
Net income (loss)
Net income (loss)
Preferred Stock, Redemption Price Per Share
Preferred stock, redemption price per right
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Business acquisitions contingent consideration, current
Business Combination, Contingent Consideration, Liability, Current
Long-Lived Tangible Asset
Long-Lived Asset, Class [Domain]
Number of operating units
Number of Operating Units
Number of operating units.
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Comprehensive income (loss)
Schedule of Revenues by Geographic Location
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block]
Number of customers
Number Of Customer
Number of customers.
Business acquisitions contingent consideration, long-term
Business Combination, Contingent Consideration, Liability, Noncurrent
Prepaid and Other Current Assets
Prepaid And Other Current Assets [Text Block]
Prepaid and other current assets.
Measurement Frequency
Measurement Frequency [Domain]
Scenario [Domain]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Total
Accumulated other comprehensive income
Equity adjustment from foreign currency translation
Schedule of Contract Balances
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
Equity Components
Equity Components [Axis]
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]
Investing activities:
Statement of Cash Flows [Abstract]
Fair Value Hierarchy and NAV
Fair Value Hierarchy and NAV [Domain]
Income Tax Disclosure [Abstract]
Summary of Accounts Payable and Other Accrued Liabilities
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Series A-Two [Member]
Series A-2.
Series A-2
Weighted-Average Exercise Price per Share Exercised
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price
Retirement Benefits [Abstract]
SAR stock Price performance hurdle two.
SAR Stock Price Performance Hurdle Two [Member]
SAR Stock Price Performance Hurdle Two
Increase (Decrease) in Prepaid Expense and Other Assets
Prepaid expenses and other current assets
Other Commitment
Other Commitment, Total
Purchase of equipment total amount
Fair Value of Financial Instruments
Fair Value Disclosures [Text Block]
Shares RSAs granted
Shares
Stock Issued During Period, Shares, Restricted Stock Award, Gross
Finance lease liabilities, net of current portion
Finance Lease, Liability, Noncurrent
Finance lease liability, net of current portion
Revenue remaining performance obligations, satisfaction period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
SAR stock price performance hurdle one.
SAR Stock Price Performance Hurdle One [Member]
SAR Stock Price Performance Hurdle One
On the two-year anniversary of the grant
Share-Based Payment Arrangement, Tranche Three [Member]
Payment of contingent consideration payable
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]
Acquisition Proforma
Acquisition Proforma [Member]
Acquisition proforma.
Derivative Contract
Derivative Contract [Domain]
Debt Instrument, Issuance Date
Effective date
Class of Stock
Class of Stock [Axis]
Business Acquisitions Contingent Consideration, Long-Term
Business Acquisitions Contingent Consideration Long Term [Member]
Business acquisitions contingent consideration, long-term.
Antidilutive securities excluded from computation of loss per share amount
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Number of operating segments
Number of Operating Segments
Accumulated Other Comprehensive (Loss) Income
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Loss
Lessee operating lease, expiration year.
Lessee Operating Lease Expiration Year
Lessee operating lease, expiration year
Shares available for grant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Shares available for grant
Accounts payable and other accrued liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total
Incremental Term Loans
Incremental Term Loans [Member]
Incremental term loans.
Onterris Two Thousand Thirteen Stock Option Plan [Member]
Onterris two thousand thirteen stock option plan.
Onterris 2013 Stock Incentive Plan
Amended and Restated 2013 Stock Option Plan
Temporary equity, shares outstanding
Beginning balance, shares
Ending balance, shares
Temporary Equity, Shares Outstanding
Number of shares outstanding
Lessee Operating Lease Liability Payments Due Year Five And Thereafter
Lessee operating lease liability payments due year five and thereafter.
Operating Leases, 2031 and thereafter
Concentration Risk Benchmark
Concentration Risk Benchmark [Domain]
Summary of Main Elements of Preliminary Purchase Price of Acquisitions
Summary of Main Elements of Purchase Price of Acquisition
Business Combination [Table Text Block]
Entity formation, month and year
Entity Formation Month And Year
Entity formation, month and year.
Weighted-Average Exercise Price per Share Forfeited/cancelled
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Revision of Prior Period, Reclassification, Adjustment [Member]
Reclassification Adjustment
Environmental Standards
Environmental standards inc.
Environmental Standards Inc [Member]
EnvStd
Accrued expenses
Accrued Liabilities, Current
Accrued Liabilities, Current, Total
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share Based Compensation Arrangement by Share Based Payment Award [Line Items]
Options to Purchase Common Stock Outstanding Beginning Balance
Options to Purchase Common Stock Outstanding Ending Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Current portion of long-term debt
Long-Term Debt, Current Maturities
Long-term Debt, Current Maturities, Total
Customer
Customer [Axis]
Consolidated total leverage ratio
Consolidated Leverage Ratio
Consolidated leverage ratio.
EPIC, Two Dot
Epic environmental pty LTD and two dot consulting, LLC.
Epic Environmental Pty L T D And Two Dot Consulting, L L C [Member]
Intangible Asset, Goodwill and Other [Abstract]
Document Type
Document Type
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]
Operating activities:
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]
Liabilities and Equity [Abstract]
Liabilities and Stockholders' Equity
Lessee Lease Description [Line Items]
Lessee, Lease, Description [Line Items]
Stock Options
Subsequent Event [Member]
Subsequent Event
Operating Income (Loss)
Income from operations
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Schedule of Allowance for Credit Losses
Goodwill acquired during the period
Goodwill, Acquired During Period
AirKinetics incorporation.
AirKinetics Incorporation [Member]
AirKinetics
Offer price per share
Sale of Stock, Price Per Share
SARs Stock Price Performance Hurdle
Stock Redeemed or Called During Period, Value
Redemption of Series A-2 preferred stock
Schedule Of Segment Reporting Information By Segment [Table]
Segment Reporting [Table]
At-the-market offering.
At-the-market Offering [Member]
At-the-market offering
Entity File Number
Securities Act File Number
Provision (recovery) for credit loss
Provision for Loan, Lease, and Other Losses
Provision for Loan, Lease, and Other Losses, Total
Other international.
Other International [Member]
Other International
Equipment
Equipment [Member]
Portion Of SARs subject to performance hurdle.
Portion Of SARs Subject To Performance Hurdle
Portion of SARs Subject to Performance Hurdle
Fourth Anniversary
Share Based Compensation Award Tranche Four [Member]
Share based compensation award tranche four.
Location, Statement of Income, Balance [Axis]
Dividends Payable, Date of Record
Dividend payable, record date
Accumulated Deficit
Retained Earnings [Member]
Summary of Term Loan Amortization
Summary Of Term Loan Amortization Table [Text Block]
Summary of term loan amortization.
Number of offices in which entity operates
Number Of Offices In Which Entity Operates
Number of offices in which entity operates.
Increase (decrease) accumulated other comprehensive income (loss) net of tax
Increase (Decrease) Accumulated Other Comprehensive Income (Loss) Net Of Tax
Accumulated other comprehensive (loss) income
Entity Registrant Name
Entity Registrant Name
Depreciation expense
Depreciation
Depreciation, Total
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net loss
Huco
Huco Consulting, Inc [Member]
Huco Consulting, Inc.
Accrued paid time off
Accrued Paid Time Off
Accrued paid time off.
Selling, General and Administrative Expense
Selling, General and Administrative Expense, Total
Selling, general and administrative expense
Defined contribution plan, employer discretionary contribution amount
Defined Contribution Plan, Employer Discretionary Contribution Amount
Land
Land [Member]
Contracts assets acquired through business acquisitions
Contracts With Customer Assets Acquired Through Business Acquisitions
Contracts with customer assets acquired through business acquisitions.
Trade Names
Trade Names [Member]
Entity Address Address Line1
Entity Address, Address Line One
Accounts Payable and Other Accrued Liabilities
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Additional Disclosures [Abstract]
Credit facility maturity date
Line of Credit Facility, Expiration Date
Current assets
Business Combination, Recognized Asset Acquired, Asset, Current
UNITED STATES
United States
Accrued payroll and benefits
Increase (Decrease) in Employee Related Liabilities
Increase (Decrease) in Employee Related Liabilities, Total
Options to Purchase Common Stock Exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Exercise of options, Shares
Accounts receivable
Business Combination, Recognized Asset Acquired, Receivable, Current
ETA
Engineering & Technical Associates, Inc.
Engineering And Technical Associates, Inc [Member]
Restricted shares outstanding
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Beginning Balance
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance
Weighted Average Grant Date Fair Value per Share Outstanding Beginning Balance
Weighted Average Grant Date Fair Value per Share Outstanding Ending Balance
Share-based Compensation Arrangement by Share-based Payment Award, Options Outstanding, Weighted Average Grant-Date Fair Value
Share-based compensation arrangement by share-based payment award, options outstanding, weighted average grant-date fair value.
Proceeds from the Series A-2 and Warrant
Proceeds from Issuance or Sale of Equity
Proceeds from Issuance or Sale of Equity, Total
Conversion Option Related to Series A-2 Preferred Stock [Member]
Conversion option related to series A-2 preferred stock.
Conversion Option Related to Series A-2 Preferred Stock
Weighted-Average Exercise Price per Share Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Total current assets
Assets, Current
Furniture and fixtures
Furniture and Fixtures [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Fair Value, Recurring and Nonrecurring [Table]
Proprietary Software [Member]
Proprietary software.
Proprietary Software
Schedule of share based compensation stock appreciation rights stock price performance hurdle.
Schedule Of Share Based Compensation Stock Appreciation Rights Stock Price Performance Hurdle [Table Text Block]
Summary of Performance Hurdles
Maximum pro-forma leverage ratio
Maximum Pro-forma Leverage Ratio
Maximum Pro-forma Leverage Ratio.
Prior year acquisitions measurement period adjustments.
Prior Year Acquisitions Measurement Period Adjustments
Prior year acquisitions measurement period adjustments
Segments
Segments [Axis]
Net (loss) income
Business Combination, Pro Forma Information, Pro Forma Income (Loss), after Tax
Maximum net leverage ratio year two
Maximum Net Leverage Ratio Year Two
Maximum net leverage ratio year two.
Rule 10b5-1 Trading Plan Seven [Member]
Rule 10b5-1 Trading Plan Seven.
Rule 10b5-1 Trading Plan Acquired Common Stock between November 10, 2025 and Agust 12, 2026
Supplemental Cash Flow Information [Abstract]
Supplemental disclosures of cash flows information:
Related-Party Transactions
Related Party Transactions Disclosure [Text Block]
2017 Stock Incentive Plan
Two Thousand Seventeen Stock Incentive Plan [Member]
Two thousand seventeen stock incentive plan.
Amended & Restated 2017 Stock Incentive Plan
Schedule of Accounts Receivable, Net
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Deferred Income Tax Expense (Benefit), Total
Deferred Income Tax Expense (Benefit)
Deferred income taxes
Deferred income taxes
Onterris Two Thousand Seventeen Stock Incentive Plan [Member]
Onterris two thousand seventeen stock incentive plan.
Onterris 2017 Stock Incentive Plan
Amended & Restated 2017 Stock Incentive Plan
Minimum pro-forma fixed charge coverage ratio
Minimum Pro-Forma Fixed Charge Coverage Ratio
Minimum Pro-Forma Fixed Charge Coverage Ratio.
Entity Small Business
Entity Small Business
Long-Term Debt, Excluding Current Maturities
Long-term Debt, Excluding Current Maturities, Total
Long-term debt, net of deferred financing fees
Goodwill, Foreign Currency Translation and Measurement Period Adjustments
Acquisitions measurement period adjustments
Foreign currency translation adjustments
Montrose Amended and Restated 2013 Stock Option Plan
Montrose Two Thousand Thirteen Stock Option Plan [Member]
Montrose Two Thousand Thirteen Stock Option Plan.
Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements
Effect of dilutive stock options
Interest expense, net
Interest expense—net
Interest Income (Expense), Operating
Interest Income (Expense), Net, Total
Weighted Average Grant Date Fair Value per Share Forfeited/ cancelled
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Awards forfeited/ cancelled, Weighted-Average Grant Date Fair Value
Long-Term Debt, Type [Axis]
Long-term Debt, Type
Incremental Common Shares Attributable to Dilutive Effect of Restricted Stock
Incremental common shares attributable to dilutive effect of restricted stock.
Effect of dilutive restricted stock
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price
Weighted-Average Exercise Price per Share Expired
Less current portion of long-term debt
Long-Term Debt and Lease Obligation, Current
Long-term Debt and Lease Obligation, Current, Total
Accounts Receivable, after Allowance for Credit Loss, Current
Accounts receivable, net
Accounts receivable, net
Consolidation Items
Consolidation Items [Domain]
Property and equipment purchased under finance leases
Non Cash Property And Equipment Purchased Under Finance Leases
Non cash property and equipment purchased under finance leases.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Finance Lease, Liability, to be Paid, Year Four
Finance Leases, 2030
Business Combination, Consideration Transferred, Liabilities Incurred
Contingent Consideration
Earnings Per Share [Abstract]
Summary of Stock Option Activity
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Accrued bonuses
Accrued Bonuses, Current
Pricing Tier2 [Member]
Pricing tier 2.
Pricing Tier2
Lessee, Operating Lease, Liability, to be Paid, Year Four
Operating Leases, 2030
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block]
Schedule of Long-lived Assets by Geographic Location
Plan Name
Plan Name [Axis]
Subsequent Event Type [Axis]
Equity [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current
Allowance for credit losses
Beginning Balance
Ending Balance
Measurement Frequency
Measurement Frequency [Axis]
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]
Financing activities:
Fair Value by Liability Class
Fair Value by Liability Class [Domain]
Entity Tax Identification Number
Entity Tax Identification Number
Defined contribution plan, maximum annual contributions per employee, percent
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent
Business combination consideration transferred other purchase price components noncurrent.
Business Combination Consideration Transferred Other Purchase Price Components Noncurrent
Other Purchase Price Components Long Term
Accounts receivable and contract assets
Increase (Decrease) in Receivables
Increase (Decrease) in Receivables, Total
Treasury Stock, Common, Shares
Treasury stock, common shares
Ending balance, shares
Accounts Receivable
Accounts Receivable [Member]
Contract assets
Unbilled Receivables, Current
Consolidated Proforma
Consolidated Proforma [Member]
Consolidated proforma.
Redeemed in cash
Payments for Repurchase of Redeemable Convertible Preferred Stock
Remaining aggregate stated value
Redemption of series A-2 preferred stock
Derivative Instrument
Derivative Instrument [Axis]
Equity Component
Equity Component [Domain]
2026 Earn Out
Two Thousand And Twenty Six Earn Outs [Member]
2026 earn out.
Entity Address City Or Town
Entity Address, City or Town
Commitments and contingencies.
Commitments And Contingencies [Line Items]
Commitments And Contingencies [Line Items]
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]
Business Acquisition
Business Combination [Axis]
Redemption of Series A-2 preferred stock, shares
Stock Redeemed or Called During Period, Shares
Number of shares out of money
Number of Shares Out of Money
Number of shares out of money.
Finite-Lived Intangible Assets [Line Items]
Intangible Asset, Finite-Lived [Line Items]
Accrued purchases of property and equipment
Capital Expenditures Incurred but Not yet Paid
Income Tax Paid, after Refund Received
Income Taxes Paid, Net, Total
Cash paid for income taxes, net
Segments
Segments [Domain]
Purchase Contract, to Purchase Equipment Over the Course Of Period
Purchase contract, to purchase equipment over the course of period.
Purchase contract, to purchase equipment over the course of period
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Concentration Risk Type
Concentration Risk Type [Axis]
Schedule of Debt
Schedule of Debt [Table Text Block]
Description Of Business And Basis Of Presentation [Line Items]
Description Of Business And Basis Of Presentation [Line Items]
Description of the business and basis of presentation.
Summary of Credit Facility Interest Rate Subject to Leverage Ratio and SOFR Table Text Block
Summary of credit facility interest rate subject to leverage ratio and SOFR
Summary of 2025 Credit Facility Term Loan and Revolving Line of Credit Interest Rate Subject to Leverage Ratio and SOFR
Goodwill and Intangible Assets
Intangible Asset and Goodwill [Text Block]
Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Acquisitions unpaid contingent consideration
Non Cash Acquisitions Unpaid Contingent Liabilities
Acquisitions unpaid contingent liabilities.
Proceeds from Long-Term Lines of Credit
Proceeds from term loan
Contract liabilities
Contract with Customer, Liability, Current
Preferred Stock Rights Expiration Date
Preferred stock rights expiration date.
Preferred stock rights expiration date
Statement [Table]
Statement [Table]
Payment for purchase price true ups.
Payment For Purchase Price True Ups
Purchase price true ups
Total lease cost
Lease, Cost
Share-Based Payment Arrangement, Expense
Stock compensation expenses
Stock compensation expense
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
Income (loss) before expense from income taxes
Write off of deferred financing costs
Write Off Deferred Financing Costs
Write off deferred financing costs.
Segment Reporting, Reconciliation of Profit (Loss) by Segment to Consolidated [Table Text Block]
Reconciliation of Segment Measure to Income (Loss) Before Expense from Income Taxes
Entity Shell Company
Entity Shell Company
Total accounts payable and other accrued liabilities
Accounts payable and other accrued liabilities
Accounts Payable and Other Accrued Liabilities, Current
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation
Net cash used in investing activities
Rule 10B51 Trading Plan Two [Member]
Rule 10b5-1 Trading Plan Two.
Rule 10b5-1 Trading Plan Sale of Common Stock on November 14, 2025
Letter of Credit Fee
Letter Of Credit Fee Percentage
Letter of credit fee percentage.
Statement [Line Items]
Statement [Line Items]
Software, Internally Developed [Member]
Proprietary Software
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other nonoperating income (expense) including discontinued operations.
Other Nonoperating Income (Expense) Including Discontinued Operations
Other losses or expenses
Accrued Medical
Accrued medical.
Accrued medical
Series A-Two Preferred Stock [Member]
Series A-Two Preferred Stock.
Series A-2 Preferred Stock
Restricted shares became fully vested and released as common stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested, Shares
Vested, Shares
Maximum
Maximum [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings
Asset value, Changes in fair value included in earnings
Change in fair value recognized
Debt Disclosure [Abstract]
Finance Leases, Total undiscounted future minimum lease payments
Finance Lease, Liability, to be Paid
Sale of Stock [Domain]
Number of shares issued
Temporary equity, shares issued
Temporary Equity, Shares Issued
Summary of Issued Shares of Common Stock
Summary Of Issued Shares Of Common Stock Table [Text Block]
Summary of issued shares of common stock.
Supplemental incentive plans
Supplemental Incentive Plans Member
Supplemental Incentive Plans
Business Acquisition, Acquiree
Business Combination [Domain]
Construction in Progress
Construction in Progress [Member]
Revenues And Accounts Receivable [Abstract]
Revenues and accounts receivable abstract.
Dividends Payable, Current
Preferred stock, dividends accrued
Rule 10B5-1 Trading Plan Eight [Member]
Rule 10B5-1 trading plan eight.
Rule 10b5-1 Trading Plan Purchase of Common Stock with Exercise of Stock Options February 27, 2026
Proceeds From The Aircraft Loan
Proceeds from the aircraft loan.
Proceeds from the aircraft loan
Percentage of prepayment fee for year three
Percentage of Prepayment Fee for Year Three
Percentage of prepayment fee for year three
Concentration Risk Benchmark
Concentration Risk Benchmark [Axis]
Federal statutory rate
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation
Change in cash, cash equivalents and restricted cash
Subsequent Events [Abstract]
Supplies
Prepaid Supplies
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Business combination recognized identifiable assets acquired and liabilities assumed operating lease liability net of current portion.
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Operating Lease Liability Net Of Current Portion
Operating lease liability - net of current portion
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]
Foreign Exchange Forward [Member]
FX forward
Other two thousand twenty three acquisitions.
Other Two Thousand Twenty Three Acquisitions [Member]
All Other 2023 Acquisitions
Weighted Average Grant Date Fair Value per Share Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Awards granted, Weighted-Average Grant Date Fair Value
Amortization of Debt Issuance Costs
Amortization of deferred debt issuance cost
Purchase Contract To Purchase Equipment Over The Course Of Period Commenced Date
Purchase contract to purchase equipment over the course of period commenced date.
Purchase contract, to purchase equipment over the course of period commenced date
Compound embedded derivative, change in net fair value
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net, Total
Fair value changes in financial instruments
Compound embedded derivative, change in fair value
O 2026 Q3 Dividends [Member]
O 2026 Q3 Dividends [Member]
O 2026 Q3 Dividends
Assets, Current [Abstract]
Current assets
Debt fee paid
Debt Issuance Costs, Net
Debt Issuance Costs, Net, Total
Debt issuance costs, net
Acquisitions contingent consideration paid in common stock, Shares
Non Cash Acquisitions Contingent Consideration Paid In Shares
Non cash acquisitions contingent consideration paid in shares value.
Current finance lease liabilities
Current portion of finance lease liabilities
Finance Lease, Liability, Current
Long Term Debt Non Current Maturities Repayment Last Nine Months of Next Fiscal Year
Long term debt non current maturities repayment last nine months of next fiscal year.
2027
Leases [Abstract]
Document Fiscal Year Focus
Document Fiscal Year Focus
Business combination recognized identifiable assets acquired and liabilities assumed other intangibles.
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Intangibles
Other intangible assets
FrontierAnalyticalLaboratoriesEnvironmentalAllianceIncGreenPathEnergyLimitedMatrixSolutionsInc [Member]
FrontierAnalyticalLaboratoriesEnvironmentalAllianceIncGreenPathEnergyLimitedMatrixSolutionsInc [Member]
Frontier, EAI, GreenPath and Matrix
Matrix, Frontier, EAI, GreenPath
Common stock, shares outstanding
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding, Ending Balance
Rule 10b5-1 Trading Plan Five [Member]
Rule 10b5-1 Trading Plan Five.
Rule 10b5-1 Trading Plan Sale of Common Stock between November 13, 2025 and May 8, 2026
Financial Instruments [Domain]
Business Acquisition [Line Items]
Business Combination [Line Items]
Payment through cash or common stock
Business Combination, Consideration Transferred
Total Purchase Price
Forecast [Member]
Forecast
Convertible And Redeemable Series A-2 Preferred Stock
Convertible And Redeemable Series A Two Preferred Stock [Member]
Convertible and redeemable series A-two preferred stock.
Building
Building [Member]
Defined Contribution Plan [Table]
Defined Contribution Plan [Table]
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent
Other non-current liabilities
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Measurement Period Adjustment
Fair value measurement with unobservable inputs reconciliation recurring basis liability measurement period adjustment.
Measurement period adjustment
Stock Repurchased and Retired During Period, Shares
Common stock repurchased under stock repurchase program, Shares
Common stock repurchased under stock repurchase program, Shares
Operating lease liabilities, net of current portion
Operating Lease, Liability, Noncurrent
Operating lease liability, net of current portion
Contract with customer liabilities, revenue recognized
Contract with Customer, Liability, Revenue Recognized
Property Plant And Equipment Gross Excluding Land And Construction In Progress
Property, plant and equipment, gross excluding land and construction in progress.
Property and equipment, gross
Revision of Prior Period [Domain]
Schedule of Amounts Related to Finite-Lived Intangible Assets
Intangible Asset, Finite-Lived [Table Text Block]
Changes in fair value included in earnings
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings
Operating Leases, Total undiscounted future minimum lease payments
Lessee, Operating Lease, Liability, to be Paid
Equipment Line Of Credit
Equipment Line Of Credit [Member]
Equipment line of credit.
Accrued other
Other Accrued Liabilities, Current
Security Exchange Name
Security Exchange Name
Weighted average discount rate, Finance Leases
Finance Lease, Weighted Average Discount Rate, Percent
New Accounting Pronouncements, Policy [Policy Text Block]
Recently Issued Accounting Pronouncements Not Yet Adopted
Schedule of Share Authorized to be Issue and Available for Grant
Schedule Of Share Authorized To Issue And Available For Grant Table [Text Block]
Schedule of Share Authorized to Issue and Available for Grant.
Entity Address State Or Province
Entity Address, State or Province
Unrecognized expense expected to be recognized period
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Related Party Transaction, Amounts of Transaction
Related party transaction amount
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Shares authorized to be issued
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Operating lease right-of-use asset, net
Contingent Consideration by Type
Business Combination, Contingent Consideration, Type [Axis]
Amendment Flag
Amendment Flag
Pricing Tier3 [Member]
Pricing tier 3.
Pricing Tier3
Schedule of Amounts Related to Goodwill
Goodwill [Table Text Block]
Debt Instrument Three
Debt Instrument Three [Member]
Debt instrument three.
Operating leases
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Share-Based Payment Arrangement [Text Block]
Stock-Based Plans and Compensation
Net Income (Loss) Available to Common Stockholders, Diluted [Abstract]
Net income (loss) attributable to common stockholders
Concentration risk percentage
Concentration Risk, Percentage
Debt Instrument
Debt Instrument [Axis]
Other income (expense)
Other Nonoperating Income (Expense)
Other Nonoperating Income (Expense), Total
Other income, net
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
SOFR
Purchase price
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Vijay Manthripragada [Member]
Vijay Manthripragada.
Vijay Manthripragada
City Area Code
City Area Code
Accounts Receivable, Allowance for Credit Loss, Recoveries Write Offs
Accounts receivable, allowance for credit loss, recoveries (Write offs).
Charged to Allowance
Accounts Receivable, Sale
Receivables sold
Shares outstanding from exercised options
Share Based Compensation Arrangement By Share Based Payment Award Exercised Options Outstanding Number
Share based compensation arrangement by share based payment award exercised options outstanding number.
Uncertain tax positions
Unrecognized Tax Benefits
Unrecognized Tax Benefits, Beginning Balance
Unrecognized Tax Benefits, Ending Balance
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item
Other operating activities, net
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Montrose Amended & Restated 2017 Stock Incentive Plan
Montrose 2017 Stock Incentive Plan
Montrose Two Thousand Seventeen Stock Incentive Plan [Member]
Montrose two thousand seventeen stock incentive plan.
Non Cash Acquisitions Contingent Consideration Paid In Shares Value
Non cash acquisitions contingent consideration paid in shares value.
Acquisitions contingent consideration paid in common stock
Schedule Of Accounts Notes Loans And Financing Receivable [Table]
Accounts and Financing Receivables [Table]
Other business acquisitions purchase price obligations
Other Business Acquisitions Purchase Price Obligations Current
Other business acquisitions purchase price obligations current.
Total
Long Term Debt Maturities Noncurrent Repayments Net
Long term debt maturities noncurrent repayments net.
Repayment of aircraft loan.
Repayment Of Aircraft Loan
Repayment of aircraft loan
Total accrued payroll and benefits
Accrued payroll and benefits
Accrued Employee Benefits, Current
Common stock, par value
Common Stock, Par or Stated Value Per Share
Convertible and Redeemable Series A-2 Preferred Stock
Convertible And Redeemable Series A Two Preferred Stock [Text Block]
Convertible and redeemable series A two preferred stock.
Finance Lease, Liability, to be Paid, Year One
Finance Leases, 2027
Adjustments to Additional Paid in Capital, Dividends in Excess of Retained Earnings
Dividend payment to the Series A-2 preferred stockholders
Defined contribution plan percentage of participant's elective deferrals
Defined Contribution Plan Percentage Of Participants Elective Deferrals
Defined contribution plan percentage of participants elective deferrals.
Weighted Average Remaining Contract Life (in Years) Exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term
EnvStd, IAG, TriAD, AirKinetics and Huco
Environmental Standards Inc, Industrial Automation Group Inc, TriAD Environmental Consultants, Inc, AirKinetics Incorporation, Huco Consulting Inc [Member]
Environmental standards inc, industrial automation group inc, triAD environmental consultants, inc, airkinetics incorporation, huco consulting inc.
Description Of Business And Basis Of Presentation [Table]
Description Of Business And Basis Of Presentation [Table]
Description of the business and basis of presentation.
Paragon
Paragon Soil and Environmental Consulting Inc.
Paragon Soil And Environmental Consulting Inc [Member]
First Anniversary
Share Based Compensation Award Tranche Five [Member]
Share based compensation award tranche five.
Short-term Debt, Type
Short-Term Debt, Type [Domain]
Liabilities, Current
Total current liabilities
Leasehold improvements
Leasehold Improvements [Member]
Property and equipment, gross
Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization
Property, Plant and Equipment, Gross, Total
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Ending Balance
Contingent Consideration Type
Business Combination, Contingent Consideration, Type [Domain]
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]
Floating rate
Beginning of year
End of period
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total
Aircraft loan
Aircraft Loan [Member]
Aircraft Loan
Rule 10b5-1 Trading Plan Six [Member]
Rule 10b5-1 Trading Plan Six.
Rule 10b5-1 Trading Plan Purchase of Common Stock with Exercise of Stock Options between November 10, 2025 and Agust 12, 2026
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Variable lease cost
Variable Lease, Cost
Segment Information
Segment Reporting [Text Block]
Long-Term Debt, Maturity, Year Four
2030
Finance Lease, Interest Payment on Liability
Operating cash flows used for interest related to finance leases
Trading Symbol
Trading Symbol
Weighted average remaining lease term, Finance Leases
Finance Lease, Weighted Average Remaining Lease Term
Finance Lease, Right-of-Use Asset, Amortization
Amortization of right of use assets
Amortization of ROU assets
Temporary Equity By Class Of Stock [Table]
Temporary Equity, by Class of Stock [Table]
Geographical [Axis]
Effect of dilutive Series A-2 Preferred Stock
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Preferred Stock
Property and Equipment, Net
Property, Plant, and Equipment [Table Text Block]
Lab and test equipment
Lab And Test Equipment [Member]
Lab and test equipment.
Subsequent Event [Table]
Subsequent Event [Table]
Shares, granted
Restricted shares, net
Granted, Shares
Entity Emerging Growth Company
Entity Emerging Growth Company
Dividends Payable, Date Declared
Dividend payable, declared date
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table]
Additional Paid-In Capital
Additional Paid-in Capital [Member]
Percentage of prepayment fee for year one
Percentage of Prepayment Fee for Year One
Percentage of prepayment fee for year one
Dividends [Axis]
Pricing Tier5 [Member]
Pricing Tier 5.
Pricing Tier5
Plan Name
Plan Name [Domain]
Other non-current liabilities
Other Liabilities, Noncurrent
Other Liabilities, Noncurrent, Total
Other Commitment, to be Paid, Year One
Minimum spend, 2027
First Quater
Share-Based Payment Arrangement, Tranche One [Member]
Finance Leases, Total discounted future minimum lease payments
Finance Lease, Liability, Total
Finance lease liability
Dividend payment to the series A-2 stockholders
Payments of Dividends
Preferred stock, dividends paid
Executive Officers
Executive Officer [Member]
Defined Contribution Plan
Defined Contribution Plan [Text Block]
Maximum net leverage ratio
Maximum Net Leverage Ratio
Maximum net leverage ratio.
Schedule Of Business Acquisitions By Acquisition [Table]
Business Combination [Table]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Aggregate Intrinsic Value of In-The-Money Options Exercised
Revision of Prior Period [Axis]
Spirit Environmental, LLC Member
Spirit Environmental, LLC Member
Spirit Environmental, LLC.
Spirit
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
Supplemental disclosures of non-cash investing and financing activities:
Cover [Abstract]
Segment Reporting, Other Segment Item, Amount
Other Segment Items
Leases
Lessee Operating And Finance Leases [Text Block]
Lessee operating and finance leases.
Commitment Fee
Commitment Fee
Line of credit facility unused commitment fee
Other Commitment, to be Paid, Remainder of Fiscal Year
Minimum spend, 2026
Accounts Receivable, before Allowance for Credit Loss, Current
Accounts receivable, invoiced
Prior Credit Facility [Member]
Prior Credit Facility [Member]
Intangible assets
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived
Customer relationships
Weighted average remaining lease term, Operating Leases
Operating Lease, Weighted Average Remaining Lease Term
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Summary of Financial Instruments Measured at Fair Value on Recurring Basis using Significant Unobservable Inputs (Level 3)
Long-Term Debt, Type [Domain]
Long-term Debt, Type
Defined contribution plan, employer matching contribution, percent of match
Defined Contribution Plan, Employer Matching Contribution, Percent of Match
Schedule of Restricted Stock Activity
Nonvested Restricted Stock Shares Activity [Table Text Block]
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated other comprehensive loss
Estimated Useful Life
Property, Plant, and Equipment, Useful Life
Amortization expense
Intangible Asset, Finite-Lived, Amortization Expense
Amortization of Intangible Assets, Total
Stock-based compensation
Stock-based compensation expense
Share-Based Payment Arrangement, Noncash Expense
Share-based Payment Arrangement, Noncash Expense, Total
Summary of Financial Instruments Measured at Fair Value on Recurring Basis
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Additional paid-in-capital
Additional Paid in Capital
Additional Paid in Capital, Total
Additional Paid in Capital, Beginning Balance
Additional Paid in Capital, Ending Balance
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Fair Value Disclosures [Abstract]
Cash and Cash Equivalent
Cash and Cash Equivalents, at Carrying Value, Total
Cash, cash equivalents and restricted cash
2017 Plan
Two Thousand Seventeen Plan [Member]
Two thousand seventeen plan.
Two Thousand Seventeen Plan
Stock Repurchased and Retired During Period, Value
Common stock repurchased under stock repurchase program
Common stock repurchased under stock repurchase program
Total finance lease cost
Finance Lease Cost
Finance lease cost.
Share Repurchase Program, Remaining Authorized, Amount
Share repurchase program, Available authorized, amount
Cash Provided by (Used in) Financing Activity, Including Discontinued Operation
Net cash (used in) provided by financing activities
Level 3 Liabilities
Beginning balance
Ending balance
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value
Total Liabilities
Minimum fixed charge coverage ratio
Minimum Fixed Charge Coverage Ratio
Minimum fixed charge coverage ratio.
Payables and Accruals [Abstract]
EPIC
Epic environmental pty LTD.
Epic Environmental Pty L T D [Member]
GreenPath
GreenPath Energy LTD [Member]
GreenPath energy LTD.
Net Income (Loss) Available to Common Stockholders, Basic
Net income (loss) attributable to common stockholders - basic
Net income (loss) attributable to common stockholders - basic
Interest Rate Swap [Member]
Interest Rate Swap
Interest Rate Swap Agreements
Options to Purchase Common Stock Forfeited/cancelled
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Awards forfeited, Shares
Entity Filer Category
Entity Filer Category
Debt Instrument, Name
Debt Instrument, Name [Domain]
Proceeds from other activities
Proceeds from Sale of Other Assets, Investing Activities
Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One
2027
Total property and equipment— net
Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization
Property, Plant and Equipment, Net, Beginning Balance
Property, Plant and Equipment, Net, Ending Balance
Property and equipment, net
Total property and equipment - net
Patent
Patents [Member]
Stock appreciation rights units grant.
Stock Appreciation Rights Units Grant [Member]
Stock Appreciation Rights Units Grant
Segment Revenues
Revenue from Contract with Customer, Excluding Assessed Tax, Total
Total revenue
Revenues
Common stock issuances pursuant to exercises and vesting of equity awards
Stock issued during period value pursuant to stock options exercised and vested.
Stock Issued During Period Value Pursuant to Stock Options Exercised and Vested
Ending balance, shares
Beginning balance, shares
Shares, Outstanding
Defined Contribution Plan Participants Compensation Percent
Defined contribution plan participant's compensation percent.
Defined contribution plan participant's compensation percent
TriAD
TriAD Environmental Consultants, Inc [Member]
TriAD environmental consultants, inc.
Debt Instrument One [Member]
Debt instrument one.
Debt Instrument One
Rebranding expenses
Rebranding expenses.
Segment Reporting [Abstract]
Entity Address Postal Zip Code
Entity Address, Postal Zip Code
Income Taxes Receivable
Income tax receivable
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Exercise Price
Exercise price
Statement of Financial Position [Abstract]
Finance Lease, Principal Payments
Financing cash flows used in finance leases
Local Phone Number
Local Phone Number