Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities:
Net loss	$ (1,467)	$ (3,917)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization expense	1,472	572
Loss on dissenting shareholders' liability	0	1,103
Gain on sale of assets	(21)	(30)
Share-based compensation	519	288
Impairment of operating lease right-of-use assets	0	56
Deferred income taxes	27	(25)
Provision for credit losses	1	2
Amortization of operating lease right-of-use assets	140	61
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(34)	(15)
Materials and supplies	(208)	(218)
Prepaid expenses and other assets	80	(347)
Accounts payable, accrued expenses, and other liabilities	464	1,880
Operating lease liabilities	(137)	(33)
Other assets	45	0
Cash (used in) provided by operating activities from discontinued operations	(102)	91
Net cash provided by (used in) operating activities	779	(532)
Cash flows from investing activities:
Cash paid for acquisition of Amplex, net of cash acquired	0	(18,364)
Payments for property, plant, and equipment	(8,502)	(3,940)
Proceeds from the disposal of property, plant, and equipment	36	35
Net cash provided by investing activities from discontinued operations	0	38,912
Net cash (used in) provided by investing activities	(8,466)	16,643
Cash flows from financing activities:
Repurchase of dissenting shares	0	(5,629)
Proceeds from RUS Reconnect Loan	2,422	0
Proceeds from Bank Equipment Loans	262	0
Payments on Bank Equipment Loans	(49)	0
Net cash provided by (used in) financing activities	2,635	(5,629)
Net (decrease) increase in cash and cash equivalents	(5,052)	10,482
Cash, cash equivalents and restricted cash at beginning of period	24,829	18,982
Cash, cash equivalents and restricted cash at end of period	19,777	29,464
Reconciliation of cash, cash equivalents, and restricted cash reported within the condensed consolidated balance sheets to the total amounts reported on the condensed consolidated statements of cash flows:
Cash and cash equivalents at beginning of period	24,516	18,982
Restricted cash included in Prepaid expenses and other assets at beginning of period	313	0
Cash, cash equivalents and restricted cash at beginning of period	24,829	18,982
Cash and cash equivalents at end of period	18,940	29,464
Restricted cash included in Prepaid expenses and other assets at end of period	837	0
Cash, cash equivalents and restricted cash at end of period	19,777	29,464
Supplemental disclosure of cash flow information:
Interest paid	10	0
Supplemental schedule of noncash investing and financing activities:
Purchase of property, plant, and equipment included in accounts payable	1,848	1,169
Reissuance of treasury stock related to share-based compensation	496	0
Additional investments in controlled entity (Amplex)	$ 4,500	$ 3,000