Note 3 - Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Disaggregation of Revenue [Table Text Block]

		Year Ended December 31, 2021
	Over time		Point in time		Total
Aerospace	$	386	$	2,214	$	2,600
Industrial	$	6,130	$	3,863	$	9,993
Research	$	2,294	$	1,560	$	3,854
Total	$	8,810	$	7,637	$	16,447

		Year Ended December 31, 2020
	Over time		Point in time		Total
Aerospace	$	1,607	$	6,013	$	7,620
Industrial	$	1,849	$	3,565	$	5,414
Research	$	3,208	$	678	$	3,886
Total	$	6,664	$	10,256	$	16,920

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

	2021			2020
Costs incurred on contracts in progress	$	7,418,433		$	4,464,471
Estimated earnings		5,071,039			2,087,396
		12,489,472			6,551,867
Billings to date		(11,408,605	)		(6,212,229	)
	$	1,080,867		$	339,638
Deferred revenue related to non-systems contracts		(192,920	)		(632,014	)
		887,947		$	(292,376	)
Included in accompanying balance sheets
Under the following captions:
Contract assets	$	2,538,373		$	494,281
Contract liabilities	$	(1,650,426	)	$	(786,657	)