Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Current assets:
Cash and cash equivalents	$ 24,516	$ 18,982
Accounts receivable - net of related allowance for credit loss of $2 and $0	109	0
Materials and supplies	968	0
Income taxes receivable	902	902
Prepaid expenses and other assets	941	373
Assets of discontinued operations	0	39,441
Total current assets	27,436	59,698
Operating lease right-of-use assets	2,963	65
Property, plant, and equipment, net	30,945	75
Intangible assets, net	3,673	0
Goodwill	12,280	0
Other assets	375	0
Total assets	77,672	59,838
Current liabilities:
Accounts payable	1,300	99
Accrued expenses and other current liabilities	588	335
Current portion of operating lease liabilities	286	0
Contract liability	569	0
Current portion long-term debt	69	0
Liabilities of discontinued operations	90	497
Total current liabilities	2,902	931
Deferred income taxes	4,306	0
Long-term debt	759	0
Operating lease liabilities	2,685	65
Total liabilities	10,652	996
Commitments and contingencies (Note 10)
Redeemable non-controlling interest	13,880	0
Shareholders’ equity:
Preferred stock, no par: 5,000 shares authorized; none issued	0	0
Common stock, 50,000 shares authorized, $0.01 par value, 12,674 shares issued and 6,696 outstanding at March 31, 2025; no par value, 12,657 shares issued and 7,289 shares outstanding at March 31, 2024	67	35,267
Treasury stock: 6,020 and 5,368 common shares, at cost, as of March 31, 2025 and March 31, 2024, respectively	(82,423)	(76,794)
Additional paid-in capital	41,645	0
Retained earnings	93,851	100,369
Total shareholders' equity	53,140	58,842
Total liabilities, redeemable non-controlling interest and shareholders' equity	$ 77,672	$ 59,838