Summary of Significant Accounting Policies (Tables)

3 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

The following table provides a summary of the changes in deferred revenues for the three months ended June 30, 2021:

Deferred revenues at April 1, 2021	$	408,219
Additional extended warranties		21,000
Revenue recognized for the three months ended June 30, 2021		(15,915	)
Deferred revenues at June 30, 2021	$	413,304

Disaggregation of Revenue [Table Text Block]

In the following tables, revenue is disaggregated by revenue category.

	For the Three Months Ended June 30, 2021
	Commercial		Government
Sales Distribution
Test Units	$	42,465	$	3,569,603
	$	42,465	$	3,569,603

	For the Three Months Ended June 30, 2020
	Commercial		Government
Sales Distribution
Test Units	$	58,573	$	2,563,277
	$	58,573	$	2,563,277

Revenue from External Customers by Geographic Areas [Table Text Block]

In the following table, revenue is disaggregated by geography.

	For the Three Months Ended June 30, 2021		For the Three Months Ended June 30, 2020
Geography
United States	$	2,449,414	$	1,714,599
International		1,682,979		1,224,838
Total	$	4,132,393	$	2,939,437