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Note 4 - Revenue Disaggregation (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Three Month's Ending June 30, 2022

		Over time				Point in time				Total
Aerospace		$	-			$	520			$	520
Energy, storage and transmission			2,024				219				2,243
Industrial			1,450				725				2,175
Research			299				572				871
Total		$	3,773			$	2,036			$	5,809

		Three Month's Ending June 30, 2021

		Over time				Point in time				Total
Aerospace		$	197			$	577			$	774
Energy, storage and transmission			-				-				-
Industrial			1,226				1,293				2,519
Research			365				376				741
Total		$	1,788			$	2,246			$	4,034

		Six Month's Ending June 30, 2022

		Over time				Point in time				Total
Aerospace		$	-			$	1,221			$	1,221
Energy, storage and transmission			2,923				226				3,149
Industrial			2,446				1,597				4,043
Research			1,005				1,043				2,048
Total		$	6,374			$	4,087			$	10,461

		Six Month's Ending June 30, 2021

		Over time				Point in time				Total
Aerospace		$	386			$	1,102			$	1,488
Energy, storage and transmission			-				-				-
Industrial			2,595				1,969				4,564
Research			552				796				1,348
Total		$	3,533			$	3,867			$	7,400

Schedule Of Cost And Estimated Earnings In Excess Of Billings [Table Text Block]

		2022
Costs incurred on contracts in progress		$	8,822,284
Estimated earnings			6,151,767
			14,974,051
Billings to date			(13,683,261	)
		$	1,290,790
Deferred revenue related to non-systems contracts			(331,452	)
			959,338
Included in accompanying balance sheets
Under the following captions:
Contract assets		$	4,255,400
Contract liabilities		$	(3,296,062	)