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Fair values (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of fair value measurement of assets [abstract]

Fair value measurement

	December 31, 2017	Level 1	Level 2	Level 3
Liabilities for which fair values are disclosed Long term borrowings	41,219	-	41,219	-
	December 31, 2016	Level 1	Level 2	Level 3
Liabilities for which fair values are disclosed Long term borrowings	62,831	-	62,831	-

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The disclosure of fair values.

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