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Revenue Recognition (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Total Net Sales	$ 5,419,000	$ 4,682,000
Products and Services Transferred Over Time
Total Net Sales	2,028,000	3,344,000
Products and Services Transferred at a Point in Time
Total Net Sales	3,391,000	1,338,000
Services
Total Net Sales	5,419,000	4,436,000
Services | Products and Services Transferred Over Time
Total Net Sales	2,028,000	3,344,000
Services | Products and Services Transferred at a Point in Time
Total Net Sales	3,391,000	1,092,000
Products
Total Net Sales	0	246,000
Products | Products and Services Transferred Over Time
Total Net Sales	0	0
Products | Products and Services Transferred at a Point in Time
Total Net Sales	$ 0	$ 246,000

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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