Fair values (Tables)

12 Months Ended

Dec. 31, 2024

Disclosure of fair value measurement of assets [abstract]

Fair values measurement

	Carrying amount	Fair value
		Level 1	Level 2	Level 3	Total
December 31, 2024
	Financial assets
Financial assets measured at fair value
Non-current portion of fair value of derivative financial instruments	181	—	181	—	181
Current portion of fair value of derivative financial instruments	442	—	442	—	442
	623
	Financial liabilities
Financial liabilities not measured at fair value
Long-term borrowings	66,540	—	68,137	—	68,137
Financial liabilities	52,471	—	53,394	—	53,394
	119,011

	Carrying amount	Fair value
		Level 1	Level 2	Level 3	Total
December 31, 2023
	Financial assets
Financial assets measured at fair value
Non-current portion of fair value of derivative financial instruments	495	—	495	—	495
Current portion of fair value of derivative financial instruments	808	—	808	—	808
	1,303
	Financial liabilities
Financial liabilities not measured at fair value
Long-term borrowings	52,620	—	54,107	—	54,107
	52,620

Valuation techniques and significant unobservable inputs

Financial instruments measured at fair value
Type	Valuation Techniques	Significant unobservable inputs
Derivative financial instruments:
Interest Rate Swap	Discounted cash flow	Discount rate
Financial instruments not measured at fair value
Type	Valuation Techniques	Significant unobservable inputs
Long-term borrowings and financial liabilities	Discounted cash flow	Discount rate