Business Combination - Schedule of assets acquired and liabilities assumed (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Mar. 31, 2025
Business Combination, Recognized Asset Acquired, Asset [Abstract]
Cash and cash equivalents	$ 221
Accounts receivable	116
Materials and supplies	537
Operating lease right-of-use	3,063
Prepaid expenses and other assets	265
Property, plant, and equipment	24,584
Intangible assets	4,133
Goodwill	12,280	$ 12,280
Total assets acquired	45,199
Business Combination, Recognized Liability Assumed, Liability [Abstract]
Accounts payable	1,252
Accrued expenses and other liabilities	112
Lease liabilities	3,063
Deferred income taxes	4,208
Deferred revenue	556
Total liabilities assumed	9,191
Total fair value of net assets acquired	36,008
Less: redeemable noncontrolling interest	(17,644)
Total purchase price	$ 18,364