Note 4 - Revenue Disaggregation (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Month's Ending March 31, 2022
	Over time		Point in time		Total
Aerospace	$	-	$	705	$	705
Energy, storage and transmission	$	899	$	7	$	906
Industrial	$	997	$	872	$	1,869
Research	$	706	$	470	$	1,176
Total	$	2,602	$	2,054	$	4,656

	Three Month's Ending March 31, 2021
	Over time		Point in time		Total
Aerospace	$	189	$	526	$	715
Energy, storage and transmission	$	-	$	-	$	-
Industrial	$	1,369	$	675	$	2,044
Research	$	187	$	420	$	607
Total	$	1,745	$	1,621	$	3,366

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

	2022
Costs incurred on contracts in progress	$	6,878,958
Estimated earnings		4,792,589
		11,671,547
Billings to date		(9,510,318	)
	$	2,161,229
Deferred revenue related to non-systems contracts		(163,791	)
		1,997,438
Included in accompanying balance sheets
Under the following captions:
Contract assets	$	2,717,823
Contract liabilities	$	(720,385	)