Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets
Cash	$ 7,288	$ 9,175
Accounts receivable, net
Trade - billed (less allowances of approximately $907 and $806, respectively), including contract retentions	17,178	17,209
Trade - unbilled	927	525
Inventories, net
Raw materials	2,679	2,329
Finished goods	3,988	2,821
Prepaid expenses	1,651	1,266
Total current assets	33,711	33,325
Property and equipment, net	29,884	27,680
Other assets	451	343
Total assets	64,046	61,348
Current liabilities
Accounts payable - trade	5,399	7,336
Accrued expenses and other liabilities	1,105	831
Deferred revenue	3,089	2,717
Accrued compensation	1,196	1,203
Accrued income taxes	841	473
Operating lease liabilities	24	43
Current maturities of notes payable	644	636
Customer deposits	2,581	2,779
Total current liabilities	14,879	16,018
Deferred revenue	5,567	4,424
Operating lease liabilities	0	2
Notes payable - less current maturities	4,768	5,092
Deferred tax liability	1,650	1,651
Total liabilities	26,864	27,187
Stockholders' equity
Preferred stock, $.01 par value; authorized 1,000,000 shares, none issued and outstanding	0	0
Common stock, $.01 par value; authorized 8,000,000 shares; 5,345,759 and 5,349,599 issued and 5,304,839 and 5,308,679 outstanding, respectively	54	54
Additional paid-in capital	7,707	7,814
Treasury stock, at cost, 40,920 shares	(102)	(102)
Retained earnings	29,523	26,395
Total stockholders' equity	37,182	34,161
Total liabilities and stockholders' equity	$ 64,046	$ 61,348