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	9 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Accrued Revenue [Member]
Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	$ 588	$ 505
Customer receipts and receivables
Scrubber sales and FOWE sales recognized in revenue
BESS CMA and MSA recognized in revenue
Payments and accruals under contracts	(470)	(67)
Scrubber and FOWE cost of goods sold recognized in earnings
BESS CMA and MSA cost of sales recognized in earnings
Balance ending	118	438
Prepaid Manufacturing Costs [Member]
Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	673	464
Customer receipts and receivables
Scrubber sales and FOWE sales recognized in revenue
BESS CMA and MSA recognized in revenue
Payments and accruals under contracts	328	936
Scrubber and FOWE cost of goods sold recognized in earnings	(576)	(864)
BESS CMA and MSA cost of sales recognized in earnings
Balance ending	425	536
Contract Liabilities [Member]
Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Balance beginning	(4,700)	(8,751)
Customer receipts and receivables	(2,449)	(4,768)
Scrubber sales and FOWE sales recognized in revenue	840	8,353
BESS CMA and MSA recognized in revenue	2,129
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	(4,180)	(5,166)
Sales (Cost of Goods Sold) [Member]
Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]
Customer receipts and receivables
Scrubber sales and FOWE sales recognized in revenue	840	8,353
BESS CMA and MSA recognized in revenue	2,129
Payments and accruals under contracts
Scrubber and FOWE cost of goods sold recognized in earnings	(1,141)	$ (864)
BESS CMA and MSA cost of sales recognized in earnings	$ (1,800)

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

9 Months Ended

Dec. 31, 2024

Dec. 31, 2023

Accrued Revenue [Member]

Accrued Revenue, Prepaid Manufacturing Costs, and Contract Liabilities [Line Items]

Balance beginning

$ 588

$ 505

Customer receipts and receivables

Scrubber sales and FOWE sales recognized in revenue

BESS CMA and MSA recognized in revenue

Payments and accruals under contracts