Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 4,173	$ 3,456
Trade accounts receivable, net	9,345	7,902
Inventories, net	18,674	23,952
Prepaid expenses and other current assets	2,724	1,892
Total current assets	34,916	37,202
Property, plant and equipment, net	4,988	5,366
Operating lease right-of-use (ROU) assets	1,246	1,560
Investments	0	742
Deferred tax assets, net	4,116	4,116
Capitalized product development cost	751	0
Other assets	387	422
Total assets	46,404	49,408
Current liabilities:
Accounts payable	5,891	9,822
Accrued compensation and related taxes	2,084	1,302
Accrued warranty expense	906	722
Accrued other expenses and other current liabilities	1,128	363
Short-term operating lease liabilities	561	525
Credit facility	0	6,476
Notes payable-current portion	0	71
Deferred revenue	1,605	1,137
Total current liabilities	12,175	20,418
Long-term operating lease liabilities	861	1,260
Deferred revenue	7,381	6,419
Total liabilities	20,417	28,097
Commitments and contingencies
Stockholders’ equity:
Preferred stock; $1.00 par value; 1,000,000 authorized shares; none issued or outstanding	0	0
Common stock; $0.60 par value; 10,000,000 authorized shares; 3,905,143 and 3,867,082 issued, and 3,563,063 and 3,577,002 outstanding shares as of September 30, 2024 and December 31, 2023, respectively	2,343	2,320
Additional paid-in capital	49,204	48,602
Accumulated deficit	(19,507)	(24,209)
Treasury stock, at cost, 342,080 and 290,080 shares as of September 30, 2024, and December 31, 2023, respectively	(6,053)	(5,402)
Total stockholders’ equity	25,987	21,311
Total liabilities and stockholders’ equity	$ 46,404	$ 49,408