Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
REVENUES	$ 6,536	$ 8,618
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember
Costs and expenses:
Manufacturing cost of sales	$ 4,401	$ 5,662
Engineering, selling and administrative	2,195	2,296
OPERATING (LOSS) INCOME	(60)	660
Other income (expense):
Interest expense, net	(3)
Loss on equity investment in unconsolidated subsidiary	(76)	(39)
Other income (expense), net	172	(384)
Total other income (expense), net	93	(423)
INCOME BEFORE INCOME TAXES	33	237
Income tax expense	6	54
NET INCOME	$ 27	$ 183
Basic per share information:
Weighted average shares outstanding	5,272,204	5,052,184
Net income	$ 0.01	$ 0.04
Diluted per share information:
Weighted average shares outstanding	5,350,571	5,097,879
Net income	$ 0.01	$ 0.04

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.