Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
REVENUES	$ 8,108	$ 6,536
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Costs and expenses:
Manufacturing cost of sales	$ 5,061	$ 4,401
Engineering, selling and administrative	2,826	2,195
OPERATING INCOME (LOSS)	221	(60)
Other (expense) income:
Interest expense, net	(7)	(3)
Loss on equity investment in unconsolidated subsidiary		(76)
Investment income	45	127
Other (expense) income, net	(16)	45
Total other income, net	22	93
INCOME BEFORE INCOME TAXES	243	33
Income tax provision	74	6
NET INCOME	$ 169	$ 27
Basic per share information:
Weighted average shares outstanding	5,323,973	5,272,204
Net income	$ 0.03	$ 0.01
Diluted per share information:
Weighted average shares outstanding	5,345,202	5,350,571
Net income	$ 0.03	$ 0.01

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.