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Intangible assets (Tables)

12 Months Ended

Dec. 31, 2017

Intangible assets (Tables) [Abstract]

Intangible assets are composed as follows

(a) Intangible assets are composed as follows:


		December 31, 2017
		Cost				Accumulated amortization				Net
Expenditures related to software and technology (i)			241,490				(115,665	)			125,825
Software licenses			9,510				(2,043	)			7,467
Customer relationships			1,981				(91	)			1,890
Goodwill (ii)			23,686				-				23,686

			276,667				(117,799	)			158,868

		December 31, 2016
		Cost				Accumulated amortization				Net
Expenditures related to software and technology (i)			143,989				(61,858	)			82,131
Software licenses			5,393				(1,416	)			3,977

			149,382				(63,274	)			86,108

The changes in cost and accumulated amortization were as follows

(b)	The changes in cost and accumulated amortization were as follows:


		Expenditures with software and technology (i)				Software licenses				Customer relationships				Goodwill (ii)				Total
At December 31, 2016
Cost			143,989				5,393				-				-				149,382
Accumulated amortization			(61,858	)			(1,416	)			-				-				(63,274	)

Net book value			82,131				3,977				-				-				86,108

At December 31, 2017
Opening balance			82,131				3,977				-				-				86,108
Cost
Additions			97,491				1,210				971				26,184				125,856
Acquisition of subsidiary			10				1,419				-				-				1,429
Transfer			-				1,488				1,010				(2,498	)			-
Amortization
Amortization			(53,807	)			(627	)			(91	)			-				(54,526	)

Net book value			125,825				7,467				1,890				23,686				158,868

At December 31, 2017
Cost			241,490				9,510				1,981				23,686				276,667
Accumulated amortization			(115,665	)			(2,043	)			(91	)			-				(117,799	)

Net book value			125,825				7,467				1,890				23,686				158,868