Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Revenues	$ 11,185	$ 9,367
Costs and expenses:
Manufacturing cost of sales	6,406	6,171
Engineering, selling and administrative	2,990	2,435
Total costs and expenses	9,396	8,606
Operating income	1,789	761
Other income (expense):
Interest income (expense), net	32	(2)
Other income (expense), net	42	(40)
Total other income (expense), net	74	(42)
Income before income taxes	1,863	719
Income tax expense	377	166
Net income	$ 1,486	$ 553
Income per common share:
Basic (in dollars per share)	$ 0.55	$ 0.21
Diluted (in dollars per share)	$ 0.53	$ 0.2
Weighted average shares outstanding:
Basic (in shares)	2,716,202	2,678,434
Diluted (in shares)	2,784,960	2,701,418

The aggregate total costs related to engineering a product design and manufacture, selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.

No definition available.