Summary of Significant Accounting Policies (Tables)

6 Months Ended

Sep. 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 six months ended September 30, 2021:

Deferred revenues at April 1, 2021	$	408,219
Additional extended warranties		27,395
Revenue recognized for the six months ended September 30, 2021		(31,982	)
Deferred revenues at September 30, 2021	$	403,632

Disaggregation of Revenue [Table Text Block]

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

	For the Three Months Ended September 30, 2021
	Commercial		Government
Sales Distribution
Test Units	$	103,517	$	2,909,663
	$	103,517	$	2,909,663

	For the Three Months Ended September 30, 2020
	Commercial		Government
Sales Distribution
Test Units	$	117,824	$	2,921,917
	$	117,824	$	2,921,917

	For the Six Months Ended September 30, 2021
	Commercial		Government
Sales Distribution
Test Units	$	145,982	$	6,479,266
	$	145,982	$	6,479,266

	For the Six Months Ended September 30, 2020
	Commercial		Government
Sales Distribution
Test Units	$	176,397	$	5,485,194
	$	176,397	$	5,485,194

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

In the following table, revenue is disaggregated by geography.

	For the Three Months Ended September 30, 2021		For the Three Months Ended September 30, 2020
Geography
United States	$	2,461,600	$	759,586
International		1,149,263		2,576,810
Total	$	3,610,863	$	3,336,396

	For the Six Months Ended September 30, 2021		For the Six Months Ended September 30, 2020
Geography
United States	$	4,911,014	$	2,474,185
International		2,832,242		3,801,648
Total	$	7,743,256	$	6,275,833