Product Warranties (Details Textual)

v3.21.1

Product Warranties (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Product Warranties (Textual) [Abstract]
Current portions of warranty reserve	$ 73	$ 120
Long-term portions of the warranty reserve	$ 52	$ 40
CNS [Member] \| Minimum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Description	one
CNS [Member] \| Maximum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Description	seven
ISM [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Description	one
IBW [Member] \| Minimum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Description	one
IBW [Member] \| Maximum [Member]
Product Liability Contingency [Line Items]
Standard Product Warranty Description	five years

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

+ References

No definition available.

+ Details

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid after one year or beyond the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

+ References

No definition available.

+ Details

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- Definition

Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

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- Definition

Product warranties.

+ References

No definition available.

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Annual report pursuant to Section 13 and 15(d)

Product Warranties (Details Textual)