Summary of Significant Accounting Policies (Tables)

6 Months Ended

Sep. 30, 2020

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, 2020:

Deferred revenues at April 1, 2020	$	413,554
Additional extended warranties		19,184
Revenue recognized for the six months ended September 30, 2020		(44,280	)
Deferred revenues at September 30, 2020	$	388,458

Disaggregation of Revenue [Table Text Block]

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

	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 Three Months Ended September 30, 2019
	Commercial		Government
Sales Distribution
Test Units	$	182,987	$	3,140,454
	$	182,987	$	3,140,454

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

	For the Six Months Ended September 30, 2019
	Commercial		Government
Sales Distribution
Test Units	$	478,910	$	5,644,594
	$	478,910	$	5,644,594

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, 2020		For the Three Months Ended September 30, 2019
Geography
United States	$	759,586	$	2,420,423
International		2,576,810		1,491,745
Total	$	3,336,396	$	3,912,168

	For the Six Months Ended September 30, 2020		For the Six Months Ended September 30, 2019
Geography
United States	$	2,474,185	$	5,332,890
International		3,801,648		1,885,740
Total	$	6,275,833	$	7,218,630