Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets
Cash	$ 9,013	$ 9,175
Accounts receivable, net
Trade - billed (less allowances of approximately $907 and $806, respectively), including contract retentions	17,822	17,209
Trade - unbilled	914	525
Inventories, net
Raw materials	2,244	2,329
Finished goods	3,998	2,821
Refundable income taxes	23	0
Prepaid expenses	979	1,266
Total current assets	34,993	33,325
Property and equipment, net	31,189	27,680
Other assets	444	343
Total assets	66,626	61,348
Current liabilities
Accounts payable - trade	5,427	7,336
Accrued expenses and other liabilities	852	831
Deferred revenue	2,792	2,717
Accrued compensation	1,381	1,203
Accrued income taxes	0	473
Operating lease liabilities	13	43
Current maturities of notes payable	651	636
Customer deposits	1,492	2,779
Total current liabilities	12,608	16,018
Deferred revenue	7,401	4,424
Operating lease liabilities	0	2
Notes payable - less current maturities	4,630	5,092
Deferred tax liability	1,650	1,651
Total liabilities	26,289	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	7,712	7,814
Treasury stock, at cost, 40,920 shares	(102)	(102)
Retained earnings	32,673	26,395
Total stockholders' equity	40,337	34,161
Total liabilities and stockholders' equity	$ 66,626	$ 61,348