Leases (Details) $ in Millions	3 Months Ended	6 Months Ended
Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
Lease Of Lessee Disclosure [Abstract]
Description of operating lease		The Company leases a space at a location under a non-cancellable operating lease with a remaining lease term of 1 year, expiring in fiscal year 2022. On December 22, 2020, the Company acquired CPS which included the assumption of an operating lease for a 55,120 square foot light manufacturing facility located in Addison Illinois, expiring June 30, 2024.
Rent expense	$ 0.1	$ 0.2
Operating leases total	$ 0.3	$ 0.5
Borrowing rate	8.50%	8.50%

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

Name:	us-gaap_OperatingLeaseCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration