UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash Flows From Operating Activities:
Net Loss	$ (3,007)	$ (1,388)
Adjustments To Reconcile Net Loss To Net Cash Used In Operating Activities:
Depreciation and Amortization	1,102	1,094
Stock-based Compensation	827	589
Write-off of Inventory	178	0
Non-cash Lease Expense from Right of Use Assets	1,091	941
Amortization of Debt Financing Costs and Accretion of Debt Discount and Premium	176	249
Loss on Disposal of Assets	57	0
Realized Gain on Sale of Investments	(120)	(51)
Changes in Operating Assets and Liabilities:
Accounts Receivable	207	61
Inventory	1,618	(12)
Prepaid and Other Assets	1,043	545
Accounts Payable	(1,367)	(1,169)
Lease Liabilities	(808)	(676)
Accrued and Other Liabilities	(2,165)	(1,098)
Deferred License Revenue	(475)	(23)
Net Cash Used In Operating Activities	(1,643)	(938)
Cash Flows From Investing Activities:
Purchases of Investments Available-for-Sale	(5,877)	0
Sale of Investments Available-for-Sale	6,000	2,003
Purchase of Equipment	(227)	(425)
Net Cash (Used In) Provided By Investing Activities	(104)	1,578
Cash Flows From Financing Activities:
Payments on Insurance Financing Note Payable	(268)	(244)
Payments on Financing Lease Liabilities	(294)	(276)
Proceeds from Issuance of Common Stock	0	2,763
Deferred Consideration Paid in Connection with Evoqua Asset Acquisition	(871)	0
Net Cash (Used In) Provided By Financing Activities	(1,433)	2,243
Effect of Exchange Rate Changes on Cash and Cash Equivalents	0	(3)
Net (Decrease) Increase in Cash and Cash Equivalents	(3,180)	2,880
Cash and Cash Equivalents at Beginning of Period	15,662	8,983
Cash and Cash Equivalents at End of Period	12,482	11,863
Supplemental Disclosure of Cash Flow Information:
Cash Paid for Interest	380	432
Supplemental Disclosure of Non-cash Investing and Financing Activities:
Issuance of Warrant in Connection with the Third Amendment as Debt Issuance Costs	0	247
Right of Use Assets - Operating Obtained in Exchange for Lease Liabilities - Operating	1,006	1,549
Change in Unrealized Gain on Investments Available-for-Sale	3	0
Increase in Prepaid Assets from Insurance Financing Note Payable	$ 660	$ 670