Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Mar. 31, 2024
Current assets:
Cash and cash equivalents	$ 27,132	$ 18,982
Accounts receivable, net	133	0
Materials and supplies	877	0
Income taxes receivable	902	902
Prepaid expenses and other assets	1,405	373
Assets of discontinued operations	65	39,441
Total current assets	30,514	59,698
Operating lease right-of-use assets	2,925	65
Property, plant, and equipment, net	24,870	75
Intangible assets, net	10,743	0
Goodwill	10,434	0
Total assets	79,486	59,838
Current liabilities:
Accounts payable	1,701	99
Accrued expenses and other current liabilities	483	335
Current portion of operating lease liabilities	267	0
Deferred revenue	564	0
Current portion long-term debt	69	0
Liabilities of discontinued operations	0	497
Total current liabilities	3,084	931
Deferred income taxes	4,792	0
Long-term debt	772	0
Operating lease liabilities	2,688	65
Total liabilities	11,336	996
Commitments and contingencies (Note 10)
Redeemable non-controlling interest	14,210	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 6,654 outstanding at December 31, 2024; 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 December 31, 2024 and March 31, 2024, respectively	(82,423)	(76,794)
Additional paid-in capital	41,411	0
Retained earnings	94,885	100,369
Total shareholders' equity	53,940	58,842
Total liabilities, redeemable non-controlling interest and shareholders' equity	$ 79,486	$ 59,838