Related Party Transactions - Additional Information (Detail) - USD ($)	12 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Nimble Holding Company Limited
Related Party Transaction [Line Items]
Nimble's Ownership Interest in Emerson number of shares	15,243,283
Nimble's Ownership Interest Percentage	72.40%
VACL
Related Party Transaction [Line Items]
Advanced payment of rental and utility fees from related parties	$ 166,000	$ 172,000
Due from related parties	0	0
VSSL
Related Party Transaction [Line Items]
Due from related parties	0	1,000
Air conditioning installation charges due	$ 2,000	$ 5,000

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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+ Details