Sales, Contract Assets and Contract Liabilities (Details) - Schedule of contract assets and liabilities - USD ($)	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales, Contract Assets and Contract Liabilities (Details) - Schedule of contract assets and liabilities [Line Items]
Beginning balance	$ (23,553,267)	$ (18,850,487)
Customer receipts and receivables	(51,463,812)	(134,841,354)
Sales recognized in earnings	61,413,520	130,138,574
Payments and accruals under contracts
Costs recognized in earnings
Ending balance	(13,603,559)	(23,553,267)
Contract Assets [Member]
Sales, Contract Assets and Contract Liabilities (Details) - Schedule of contract assets and liabilities [Line Items]
Beginning balance	24,604,339	12,237,825
Customer receipts and receivables
Sales recognized in earnings
Payments and accruals under contracts	19,553,678	90,932,669
Costs recognized in earnings	(39,828,410)	(78,566,155)
Ending balance	4,329,607	24,604,339
Sales (Cost of sales) [Member]
Sales, Contract Assets and Contract Liabilities (Details) - Schedule of contract assets and liabilities [Line Items]
Customer receipts and receivables
Sales recognized in earnings	61,413,520	130,138,574
Payments and accruals under contracts
Costs recognized in earnings	$ (39,828,410)	$ (78,566,155)