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Other Financial Information | 12 Months Ended
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Dec. 31, 2025
Other Financial Information [Abstract] |
Other Financial Information | Other Financial Information Cash, Cash Equivalents and Restricted Cash The Consolidated Statements of Cash Flows explain the changes in the total of cash, cash equivalents and restricted cash, such as cash amounts deposited in restricted cash accounts in connection with the Company’s credit cards. The following table presents a reconciliation of cash, cash equivalents and restricted cash, reported for each period within the Consolidated Balance Sheets and the Consolidated Statements of Cash Flows that sum to the total of such amounts.
| December 31,
| 2025 |  | 2024 |  | 2023
| (In thousands)
Cash and cash equivalents | $48,076 |  | $29,627 |  | $68,098
Restricted cash, non-current (included in other assets, non-current) | — |  | 130 |  | 127
Total cash, cash equivalents and restricted cash | $48,076 |  | $29,757 |  | $68,225
Allowance for Doubtful Accounts The following table presents the allowance for doubtful accounts activities.
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
(In thousands) |
Balance, beginning of year | $221 |  | $138 |  | $148
Changes to reserves (1) | 114 |  | 206 |  | 73
Collection of specific reserves and uncollectible accounts written off, net of recoveries | — |  | (123) |  | (83)
Balance, end of year | $335 |  | $221 |  | $138
(1)General and specific reserves charged to expense. Inventories, net
| December 31,
| 2025 |  | 2024
| (In thousands)
Raw materials | $8,289 |  | $8,829
Work in process | 6,270 |  | 6,417
Finished goods | 10,768 |  | 10,463
Inventories, gross | 25,327 |  | 25,709
Valuation adjustments for excess and obsolete inventory | (1,067) |  | (803)
Inventories, net | $24,260 |  | $24,906
Property and Equipment
| December 31,
| 2025 |  | 2024
| (In thousands)
Machinery and equipment | $29,688 |  | $29,718
Leasehold improvements | 19,797 |  | 19,419
Software | 1,895 |  | 1,895
Office equipment, furniture, and fixtures | 3,009 |  | 2,930
Automobiles | 416 |  | 417
Construction in progress | 215 |  | 139
Total property and equipment | 55,020 |  | 54,518
Less: Accumulated depreciation and amortization | (42,086) |  | (39,094)
Total property and equipment, net | $12,934 |  | $15,424
| Years Ended December 31,
| 2025 |  | 2024 |  | 2023
(In thousands) |
Depreciation and amortization expense | $3,759 |  | $4,046 |  | $4,102
Goodwill Goodwill is tested for impairment annually in the third quarter of the Company’s fiscal year or more frequently if indicators of potential impairment exist. The Company monitors the industries in which it operates and reviews its business performance for indicators of potential impairment. The recoverability of goodwill is measured at the reporting unit level, which represents the operating segment. The carrying amount of goodwill as of December 31, 2025 and 2024 was $12.8 million. On July 1, 2025, the Company estimated the fair value of its reporting units using the discounted cash flow approach and market approach. The forecast of future cash flows, which is based on the Company’s best estimate of future net sales and operating expenses, is based primarily on expected category expansion, pricing, market segment, and general economic conditions. The Company incorporates other significant inputs to its fair value calculations, including discount rate and market multiples, to reflect current market conditions. As a result, the analysis performed indicated that the fair value of each reporting unit, that is allocated goodwill, significantly exceeds its carrying value, and therefore, no impairment charges were recorded. Accrued Expenses and Other Liabilities
| December 31,
| 2025 |  | 2024
| (In thousands)
Accrued expenses and other liabilities, current |  |  |
Payroll, benefits, incentives and commissions payable | $6,683 |  | $10,179
Warranty reserve | 205 |  | 1,090
Restructuring accrual | — |  | 2,476
Income taxes payable | 2,401 |  | 947
Other accrued expenses and other liabilities | 2,381 |  | 3,036
Total accrued expenses and other liabilities | 11,670 |  | 17,728
Other liabilities, non-current | 1,070 |  | 57
Total accrued expenses, and current and non-current other liabilities | $12,740 |  | $17,785
Restructuring During the fourth quarter of fiscal year 2024, the Company implemented a restructuring plan which included reductions primarily within the G&A function, in order to lower the Company’s operating cost structure, and to position the Company for profitable growth. The Company recorded a restructuring charge of approximately $2.8 million in total, of which $0.3 million was r ecorded during the year ended December 31, 2025. The total restructuring charge recorded relates to severance and benefits, including reemployment assistance, for 38 terminated employees, which was approximately 15% of the Company’s workforce. The restructuring plan was complete as of December 31, 2025. All expenses associated with the Company’s restructuring plan are included in “Restructuring charges” in the Consolidated Statements of Operations.
| Segment |  | Corporate |  | Total Expense
| Water |  | Emerging Technology |  |
| (In thousands)
Amount recognized in 2024 | 1,147 |  | 832 |  | 497 |  | 2,476
Amount recognized in 2025 | 105 |  | 47 |  | 161 |  | 313
Total restructuring expenses recognized | $1,252 |  | $879 |  | $658 |  | $2,789
The following table presents the change in the Company’s restructuring accrual balances during the year ended December 31, 2025:
|  | Severance and Benefits
|  | (In thousands)
Balance, as of December 31, 2024 |  | $2,476
Restructuring provision, net of adjustments |  | 313
Cash paid |  | (2,789)
Balance, as of December 31, 2025 |  | $—
Accumulated Other Comprehensive (Loss) Income There were no reclassifications of amounts out of accumulated other comprehensive (loss) income for the years ended December 31, 2025 and 2024, as there have been no sales of securities or translation adjustments that impacted other comprehensive income (loss) during these periods. For the year ended December 31, 2023, there was $3.0 million of securities sold and the reclassification to other comprehensive income (loss) was immaterial. The tax impact of the changes in accumulated other comprehensive (loss) income for the years ended December 31, 2025, 2024 and 2023, was not material. Advertising Expense Advertising expense is charged to operations during the year in which it is incurred. Total advertising expense was not material for the years ended December 31, 2025, 2024 and 2023.

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