Related parties’ transactions (Tables)

12 Months Ended

Dec. 31, 2025

Notes and other explanatory information [abstract]

Schedule of transactions with related parties

	12/31/2025							12/31/2024
Description	Pre-payments / Receivable		Accounts payable / Debt		(Expenses) / Income			Pre-payments / Receivable		Accounts payable / Debt		(Expenses) / Income
A10 Group
Expense Reimbursement		—		—		(444	)		—		—		(251	)
Miazga
Lease agreements		—		606		(250	)		—		5		(10	)
Royalties		—		1,325		(823	)		—		671
Arqueana
Lease agreements		—		1,381		(301	)		—		123		(16	)
Tatooine
Accounts payable		—		155		—			—		—		—
Loans agreement		—		5,653		(11	)		—		—		—
Accounts receivable		18,542		—		2,738			12,953		—		2,092
Instituto Lítio verde
Accounts payable		—		1,453		(963	)		—		563		(969	)
Total		18,542		10,573		(54	)		12,953		1,362		846

Schedule of compensation payable

	12/31/2025		12/31/2024
Stock-based compensation, included in operating expenses		1,386		2,187
Salaries, benefits and director's fees, included in general and administrative expenses		821		1,045
		2,207		3,232