CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 6,220	$ 10,269
Restricted cash, current	1,080	1,819
Investments in equity securities	4,295	3,767
Accounts receivable, less allowance for expected credit losses of $352 and $275, respectively	31,823	35,220
Inventories, net	7,254	6,988
Note receivable, current portion	277	256
Prepaid and other	3,341	4,168
Total current assets	54,290	62,487
Property and equipment, net of accumulated depreciation of $8,336 and $6,367, respectively	16,666	18,610
Operating lease right-of-use assets	13,455	11,675
Goodwill	5,912	5,944
Intangible assets, net of accumulated amortization of $5,288 and $4,795, respectively	1,188	1,688
Long-term investments	953	953
Notes receivable, net of current portion	9,152	8,629
Deferred tax assets, net	2,439	1,911
Restricted cash, non-current	548	1,322
Other assets	13	12
Total assets	104,616	113,231
Current liabilities:
Accounts payable	6,131	4,769
Accrued salaries, commissions, and benefits	7,270	7,526
Accrued expenses and other current liabilities	4,565	6,907
Short-term debt	8,280	8,473
Deferred revenue	1,141	1,496
Operating and finance lease obligations, current	762	655
Total current liabilities	28,149	29,826
Income tax payable	103	99
Operating lease obligations	13,190	11,235
Long-term debt, net of current portion	4,667	6,056
Other liabilities	382	308
Total liabilities	46,491	47,524
Commitments and contingencies
Stockholders’ equity:
10% Series A Cumulative Perpetual Preferred Stock, $0.001 par value; 8,000 shares authorized: 2,778 and 2,691 shares issued; 2,457 and 2,370 shares outstanding, respectively	3	3
Common stock, $0.001 par value, 20,000 shares authorized; 5,456 and 5,366 shares issued; 3,727 and 3,755 shares outstanding, respectively	5	5
Additional paid-in capital	531,092	530,136
Accumulated deficit	(443,164)	(435,934)
Accumulated other comprehensive loss, net of applicable tax	(1,471)	(1,364)
Treasury stock, at cost: 1,729 and 1,611 common shares, respectively, and 321 preferred shares for both periods	(28,340)	(27,139)
Total stockholders’ equity	58,125	65,707
Total liabilities and stockholders’ equity	$ 104,616	$ 113,231