Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 6,830	$ 11,939
Short-term investments	11,000	12,942
Accounts receivable, less current expected credit loss of $107 and $108, respectively	5,891	5,355
Inventories, net	382	373
Prepaid expenses and other current assets	899	1,335
Total current assets	25,002	31,944
Property and equipment, net of accumulated depreciation of $17,748 and $19,433, respectively	4,688	4,739
Goodwill	2,116	2,116
Other intangible assets, net of accumulated amortization of $622 and $561, respectively	587	646
Right-of-use operating lease assets, net	480	536
Long-term investments	9,950	6,991
Other assets	208	207
Total assets	43,031	47,179
Current liabilities:
Accounts payable	3,009	3,242
Accrued liabilities:
Operating lease liabilities - current	101	89
Employee compensation	744	1,308
Other accrued liabilities	1,124	1,634
Total current liabilities	4,978	6,273
Operating lease liabilities - non-current	421	491
Deferred income taxes, net	187	187
Other liabilities	294	296
Total liabilities	5,880	7,247
Stockholders’ equity:
Common stock, $.01 par value, 40,000,000 shares authorized, 32,457,627 and 32,281,179 shares issued, and 31,216,789 and 31,074,438 shares outstanding, respectively	324	322
Additional paid-in capital	165,775	165,616
Accumulated deficit	(124,648)	(121,796)
Accumulated other comprehensive loss	(1,763)	(1,718)
Nil coupon perpetual loan notes	76	76
Treasury stock, at cost	(2,613)	(2,568)
Total stockholders’ equity	37,151	39,932
Total liabilities and stockholders’ equity	$ 43,031	$ 47,179