Note F - Geographic and Other Information - Sales to Major Customers (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Gross Sales	$ 14,753,831	$ 14,458,055
Customer A [Member]
Gross Sales	5,349,381	6,067,821
Customer B [Member]
Gross Sales	2,390,911	2,049,190
All Other Customers [Member]
Gross Sales	$ 7,013,539	$ 6,341,044

Gross Amount before sales allowance and return, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

No definition available.

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Namespace Prefix:	ug_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration