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13. Investment properties (Details) - BRL (R$) R$ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Investment Properties Details Abstract
Investment properties, beginning	R$ 57,652	R$ 57,968	R$ 56,957
Transfers	13		1,231
Write-offs and disposals	(9,995)	(244)	(124)
Reversal of estimated losses			10
Depreciation	(50)	(72)	(106)
Investment properties, ending	R$ 47,620	R$ 57,652	R$ 57,968

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- Definition

The amount of depreciation recognised on investment property. [Refer: Depreciation and amortisation expense; Investment property]

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The decrease in investment property resulting from disposals. [Refer: Investment property]

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Expiry date 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee under a finance lease) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. Effective 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business.

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The amount of reversal of impairment loss recognised in profit or loss for investment property. [Refer: Reversal of impairment loss recognised in profit or loss; Investment property]

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