Note 1 - Organization and Significant Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Net sales	$ 5,763,358	$ 6,978,938	$ 9,237,504	$ 14,139,185
Commercial Customers [Member]
Net sales	116,718	153,423	200,998	219,868
Government Customers [Member]
Net sales	3,478,904	5,444,143	6,163,000	10,599,544
International Customers [Member]
Net sales	2,167,736	1,381,372	2,873,506	3,319,773
Simulators and Accessories Segment [Member]
Net sales	3,556,105	4,502,244	4,771,529	8,266,580
Simulators and Accessories Segment [Member] \| Commercial Customers [Member]
Net sales	64,444	106,113	92,088	130,491
Simulators and Accessories Segment [Member] \| Government Customers [Member]
Net sales	1,466,510	3,221,977	2,039,302	5,193,300
Simulators and Accessories Segment [Member] \| International Customers [Member]
Net sales	2,025,151	1,174,154	2,640,139	2,942,789
Extended Service-type Warranties Segment [Member]
Net sales	900,326	1,074,306	1,775,260	2,044,417
Extended Service-type Warranties Segment [Member] \| Commercial Customers [Member]
Net sales	13,837	41,432	37,768	77,357
Extended Service-type Warranties Segment [Member] \| Government Customers [Member]
Net sales	826,053	1,007,989	1,635,108	1,921,310
Extended Service-type Warranties Segment [Member] \| International Customers [Member]
Net sales	60,436	24,885	102,384	45,750
Customized Software and Content Segment [Member]
Net sales	181,052	30,841	481,052	199,454
Customized Software and Content Segment [Member] \| Commercial Customers [Member]
Net sales	0	0	0	0
Customized Software and Content Segment [Member] \| Government Customers [Member]
Net sales	165,631	30,841	465,631	97,622
Customized Software and Content Segment [Member] \| International Customers [Member]
Net sales	15,421	0	15,421	101,832
Installation and Training Segment [Member]
Net sales	152,057	307,850	249,441	508,554
Installation and Training Segment [Member] \| Commercial Customers [Member]
Net sales	5,000	3,486	5,000	7,875
Installation and Training Segment [Member] \| Government Customers [Member]
Net sales	104,814	150,812	184,373	330,078
Installation and Training Segment [Member] \| International Customers [Member]
Net sales	42,243	153,552	60,068	170,601
Design and Prototyping Segment [Member]
Net sales	0	29,861	0	1,145,751
Design and Prototyping Segment [Member] \| Commercial Customers [Member]
Net sales	0	0	0	0
Design and Prototyping Segment [Member] \| Government Customers [Member]
Net sales	0	29,861	0	1,145,751
Design and Prototyping Segment [Member] \| International Customers [Member]
Net sales	0	0	0	0
STEP Segment [Member]
Net sales	973,818	1,033,836	1,960,222	1,974,429
STEP Segment [Member] \| Commercial Customers [Member]
Net sales	33,437	2,392	66,142	4,145
STEP Segment [Member] \| Government Customers [Member]
Net sales	915,896	1,002,663	1,838,586	1,911,483
STEP Segment [Member] \| International Customers [Member]
Net sales	$ 24,485	$ 28,781	$ 55,494	$ 58,801