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Segment Reporting (Tables) | 12 Months Ended
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Dec. 31, 2025
Segment Reporting [Abstract] |
Schedule of Financial Information by Segment | The following table presents a summary of the Company’s financial information by segment, including significant segment expenses, and corporate operating expenses.
| Year Ended December 31, 2025 |  | Year Ended December 31, 2024 |  | Year Ended December 31, 2023
| Water |  | Emerging Technologies |  | Corporate |  | Total |  | Water |  | Emerging Technologies |  | Corporate |  | Total |  | Water |  | Emerging Technologies |  | Corporate |  | Total
(In thousands) |
Revenue | $134,702 |  | $285 |  | $— |  | $134,987 |  | $144,310 |  | $638 |  | $— |  | $144,948 |  | $127,725 |  | $624 |  | $— |  | $128,349
Cost of revenue | 46,923 |  | 133 |  | — |  | 47,056 |  | 47,389 |  | 626 |  | — |  | 48,015 |  | 40,290 |  | 980 |  | — |  | 41,270
Gross profit (loss) | 87,779 |  | 152 |  | — |  | 87,931 |  | 96,921 |  | 12 |  | — |  | 96,933 |  | 87,435 |  | (356) |  | — |  | 87,079
Operating expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative | 5,686 |  | 2,350 |  | 21,733 |  | 29,769 |  | 8,127 |  | 3,821 |  | 21,126 |  | 33,074 |  | 7,751 |  | 3,927 |  | 17,186 |  | 28,864
Sales and marketing | 13,664 |  | 5,449 |  | 1,813 |  | 20,926 |  | 15,683 |  | 7,340 |  | 2,400 |  | 25,423 |  | 13,691 |  | 6,053 |  | 2,420 |  | 22,164
Research and development | 6,344 |  | 6,690 |  | — |  | 13,034 |  | 4,523 |  | 11,713 |  | — |  | 16,236 |  | 4,251 |  | 12,750 |  | — |  | 17,001
Restructuring charges | 105 |  | 47 |  | 161 |  | 313 |  | 1,147 |  | 832 |  | 497 |  | 2,476 |  | — |  | — |  | — |  | —
Total operating expenses | 25,799 |  | 14,536 |  | 23,707 |  | 64,042 |  | 29,480 |  | 23,706 |  | 24,023 |  | 77,209 |  | 25,693 |  | 22,730 |  | 19,606 |  | 68,029
Operating income (loss) | $61,980 |  | $(14,384) |  | $(23,707) |  | $23,889 |  | $67,441 |  | $(23,694) |  | $(24,023) |  | $19,724 |  | $61,742 |  | $(23,086) |  | $(19,606) |  | $19,050
Schedule of Segment Reporting Information, by Segment | The following table presents a summary of the Company’s depreciation and amortization by segment and corporate operating expenses.
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
(In thousands) |
Water | $2,788 |  | $2,875 |  | $2,779
Emerging Technologies | 310 |  | 478 |  | 521
Corporate | 662 |  | 693 |  | 802
Total depreciation and amortization | $3,760 |  | $4,046 |  | $4,102

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- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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