Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 31, 2021

Accounting Policies [Abstract]

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

The following table provides a summary of the changes in deferred revenues related to extended warranties for the year ended March 31, 2021:

Deferred revenues related to extended warranties on April 1, 2020	$	413,554
Additional extended warranties		81,253
Revenue recognized for the year ended March 31, 2021		(86,588	)
Deferred revenues related to extended warranties on March 31, 2021	$	408,219

Disaggregation of Revenue [Table Text Block]

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

	For the Year Ended March 31, 2021
	Commercial		Government
Sales Distribution
Test Units	$	325,195	$	9,858,537
	$	325,195	$	9,858,537

	For the Year Ended March 31, 2020
	Commercial		Government
Sales Distribution
Test Units	$	918,720	$	12,737,362
	$	918,720	$	12,737,362

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

In the following table, revenue is disaggregated by geography.

	For the Year Ended March 31, 2021		For the Year Ended March 31, 2020
Geography
United States	$	5,511,516	$	7,205,596
International		6,071,004		8,569,347
Total	$	11,582,520	$	15,774,943