Sales, Prepaid Manufacturing Costs, Cost of Goods Sold, and Contract Liabilities - Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities (Details) - USD ($) $ in Thousands	6 Months Ended
Sep. 30, 2024	Sep. 30, 2023
Accrued Revenue [Member]
Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	$ 588	$ 505
Customer receipts and receivables
Scrubber and FOWE sales recognized in revenue
BESS CMA and MSA recognized in revenue
Payments and accruals under contracts	(74)	(197)
Scrubber and FOWE cost of goods sold recognized in earnings
BESS CMA and MSA cost of sales recognized in earnings
Balance ending	514	308
Prepaid Manufacturing Costs [Member]
Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	673	464
Customer receipts and receivables
Scrubber and FOWE sales recognized in revenue
BESS CMA and MSA recognized in revenue
Payments and accruals under contracts	328	877
Scrubber and FOWE cost of goods sold recognized in earnings	(681)	(444)
BESS CMA and MSA cost of sales recognized in earnings
Balance ending	320	897
Contract Liabilities [Member]
Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	(4,700)	(8,751)
Customer receipts and receivables	(2,224)	(861)
Scrubber and FOWE sales recognized in revenue	725
BESS CMA and MSA recognized in revenue	1,436
Payments and accruals under contracts
Scrubber and FOWE cost of goods sold recognized in earnings
BESS CMA and MSA cost of sales recognized in earnings
Balance ending	(4,763)	(9,612)
Sales (Cost of Goods Sold) [Member]
Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Customer receipts and receivables
Scrubber and FOWE sales recognized in revenue	725
BESS CMA and MSA recognized in revenue	1,436
Payments and accruals under contracts
Scrubber and FOWE cost of goods sold recognized in earnings	(681)	$ (444)
BESS CMA and MSA cost of sales recognized in earnings	$ (1,080)

Sales, Prepaid Manufacturing Costs, Cost of Goods Sold, and Contract Liabilities - Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities (Details) - USD ($)
$ in Thousands

6 Months Ended

Sep. 30, 2024

Sep. 30, 2023

Accrued Revenue [Member]

Schedule of Changes in Company’s Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]

Balance beginning

$ 588

$ 505

Customer receipts and receivables

Scrubber and FOWE sales recognized in revenue

BESS CMA and MSA recognized in revenue

Payments and accruals under contracts