Organization - Schedule of Correction of Immaterial Errors in Previously Issued Financial Statements Through the Current Period (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025	Mar. 31, 2024
Assets:
Cash and cash equivalents	$ 22,034		$ 24,516
Accounts receivable - net of related allowance for credit losses of $1 and $2, as of June 30, 2025 and March 31, 2025, respectively	146		109
Operating lease right-of-use assets	2,894		2,963
Property, plant, and equipment, net	34,494		30,945
Liabilities:
Accounts payable	2,337		1,300
Accrued expenses and other current liabilities	699		588
Operating lease liability - current portion	291		286
Operating lease liabilities	2,612		2,685
Total assets	78,925		77,672
Total liabilities	12,552		10,652
Total Old Market Capital Corporation shareholders' equity	52,465		53,140
Total Shareholders Equity	52,465	$ 53,097	53,140	$ 58,842
Redeemable NCI	13,908		13,880
Total liabilities, redeemable non-controlling interest and shareholders' equity	78,925		$ 77,672
STATEMENT OF CASH FLOWS
Net cash provided by (used in) operating activities	912	(438)
Net cash (used in) provided by investing activities	(3,715)	22,081
Net cash used in financing activities	847	0
STATEMENT OF OPERATIONS
Revenue recognized from contract liability balance	3,034	489
Expenses:
Depreciation and amortization	608	91
General and administrative	2,233	3,791
Net (loss)	(720)	(3,513)
Loss from continuing operations	(758)	(5,572)
Net income (loss) from continuing ops attributable to common shareholders (Note 5)	$ (748)	$ (3,302)
Per share loss from continuing operations attributable to common shareholders - basic	$ (0.12)	$ (0.79)
Per share loss from continuing operations attributable to common shareholders diluted	(0.12)	(0.79)
Per share (loss) income available to common stockholders - basic	(0.11)	(0.49)
Per share (loss) income available to common stockholders - diluted	$ (0.11)	$ (0.49)