Note 4 - Revenue Disaggregation (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Month's Ending June 30, 2021
	Over time		Point in time		Total
Aerospace	$	197	$	577	$	774
Industrial	$	1,226	$	1,293	$	2,519
Research	$	365	$	376	$	741
Total	$	1,788	$	2,246	$	4,034

	Three Month's Ending June 30, 2020
	Over time		Point in time		Total
Aerospace	$	134	$	1,699	$	1,833
Industrial	$	259	$	623	$	882
Research	$	495	$	509	$	1,004
Total	$	888	$	2,831	$	3,719

	Six Month's Ending June 30, 2021
	Over time		Point in time		Total
Aerospace	$	386	$	1,103	$	1,489
Industrial	$	2,595	$	1,968	$	4,563
Research	$	552	$	796	$	1,348
Total	$	3,533	$	3,867	$	7,400

	Six Month's Ending June 30, 2020
	Over time		Point in time		Total
Aerospace	$	1,299	$	3,884	$	5,183
Industrial	$	386	$	1,484	$	1,870
Research	$	1,089	$	1,613	$	2,702
Total	$	2,774	$	6,981	$	9,755

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

	2021
Costs incurred on contracts in progress	$	4,882,600
Estimated earnings		2,900,056
		7,782,656
Billings to date		(7,098,362	)
	$	684,294
Deferred revenue related to non-systems contracts		(618,984	)
		65,310
Included in accompanying balance sheets
Under the following captions:
Contract assets	$	1,066,382
Contract liabilities	$	(1,001,072	)