Liquidity and Management Plans (Details) - USD ($)	6 Months Ended
	Sep. 30, 2021	Aug. 31, 2020
Organization Consolidation And Presentation OF Financial Statements [Line Items]
Failure to maintain stockholders' equity after reporting losses from continuing operations and/or net losses		$ 6,000,000.0
Unused availability of facility	$ 2,413,000
Spread on variable interest rate (as a percent)	2.00%
Prime Rate
Organization Consolidation And Presentation OF Financial Statements [Line Items]
Spread on variable interest rate (as a percent)	2.00%
Hong Kong Joint Venture
Organization Consolidation And Presentation OF Financial Statements [Line Items]
Unused availability of facility	$ 1,889,000