Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows From Operating Activities:
Net loss	$ (5,165,000)	$ (4,478,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	160,000	126,000
Income tax benefit		(330,000)
Change in fair value of contingent consideration	202,000	135,000
Non-cash lease expense	108,000	82,000
Depreciation	39,000	32,000
Deferred research and development tax credit	(223,000)
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	766,000	(447,000)
Accounts payable	(190,000)	(440,000)
Accrued expenses	382,000	568,000
Accrued employee benefits	(845,000)	(758,000)
Operating lease liability	(115,000)	(100,000)
Net Cash Used In Operating Activities	(4,881,000)	(5,610,000)
Cash Flows from Investing Activities
Purchase of property and equipment		(8,000)
Net Cash Used in Investing Activities		(8,000)
Cash Flows from Financing Activities
Payment of loans payable		(55,000)
Net Cash used in Financing Activities		(55,000)
Effects of exchange rate changes on cash and cash equivalents	(38,000)	(35,000)
Net decrease in cash and cash equivalents and restricted cash	(4,919,000)	(5,708,000)
Cash and cash equivalents and restricted at the beginning of this period	23,279,000	41,884,000
Cash and cash equivalents and restricted cash at the end of this period	18,360,000	36,176,000
Reconciliation of cash, cash equivalents, and restricted cash reported in the consolidated balance sheet
Cash and cash equivalents	18,261,000	36,076,000
Restricted cash included in other long-term assets	99,000	100,000
Total cash, cash equivalents, and restricted cash shown in the statement of cash flows	18,360,000	36,176,000
Supplemental non-cash investing and financing activities:
Right of use assets obtained in exchange for lease liabilities	$ 937,000	$ 937,000