Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Current assets
Cash	$ 9,006	$ 7,548
Accounts receivable, net
Trade - billed (less allowances of approximately $1,222 and $1,130, respectively), including contract retentions	22,879	19,420
Trade - unbilled	952	1,327
Inventories, net
Raw materials	2,275	2,078
Finished goods	5,210	4,599
Prepaid expenses	1,248	877
Total current assets	41,570	35,849
Property and equipment, net	32,655	31,704
Other assets	432	438
Total assets	74,657	67,991
Current liabilities
Accounts payable - trade	5,811	4,741
Accrued expenses and other liabilities	397	429
Deferred revenue	4,466	4,313
Accrued compensation	1,183	1,770
Accrued income taxes	2,556	1,539
Operating lease liabilities	19	21
Current maturities of notes payable	661	658
Customer deposits	2,160	1,539
Total current liabilities	17,253	15,010
Deferred revenue	7,496	6,222
Operating lease liabilities	85	90
Notes payable - less current maturities	4,269	4,436
Deferred tax liability	484	494
Total liabilities	29,587	26,252
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; 5,346,526 and 5,346,526 issued and 5,304,606 and 5,304,606 outstanding, respectively	54	54
Additional paid-in capital	7,721	7,717
Treasury stock, at cost, 40,920 shares	(102)	(102)
Retained earnings	37,397	34,070
Total stockholders' equity	45,070	41,739
Total liabilities and stockholders' equity	$ 74,657	$ 67,991