Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 4,066	$ 1,918
Trade accounts receivable, net	9,110	10,616
Inventories, net	21,573	22,105
Prepaid expenses and other current assets	1,963	1,578
Total current assets	36,712	36,217
Property, plant and equipment, net	5,501	4,884
Right-of-use (ROU) assets	1,669	1,991
Investments	650	1,481
Deferred tax assets, net	4,116	4,116
Other assets	420	143
Total assets	49,068	48,832
Current liabilities:
Accounts payable	11,763	12,898
Accrued compensation and related taxes	1,555	1,143
Accrued warranty expense	736	591
Accrued other expenses and other current liabilities	642	700
Short-term lease liabilities	514	485
Credit facility	6,459	5,854
Notes payable-current portion	94	277
Deferred revenue	1,110	1,022
Total current liabilities	22,873	22,970
Notes payable, net of current portion	0	329
Long-term lease liabilities	1,396	1,785
Deferred revenue	6,185	3,613
Total liabilities	30,454	28,697
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; 3,722,970 and 3,686,939 issued and 3,432,890 and 3,396,859 outstanding shares as of September 30, 2023, and December 31, 2022, respectively	2,234	2,212
Additional paid-in capital	46,281	45,304
Accumulated deficit	(24,499)	(21,979)
Treasury stock, at cost, 290,080 shares as of September 30, 2023, and December 31, 2022, respectively	(5,402)	(5,402)
Total stockholders' equity	18,614	20,135
Total liabilities and stockholders' equity	$ 49,068	$ 48,832