XML 101 R207.htm IDEA: XBRL DOCUMENT v3.20.1
Cost of sales, without considering depreciation and amortization - Cost of services (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of cost of sales [Line Items]      
Cost of sales of services, without considering depreciation and amortization $ 3,378 $ 4,318 $ 12,954
cost of services [Member]      
Disclosure of cost of sales [Line Items]      
Disbursement of salaries 1,231 2,128 7,398
Consumption of materials and supplies 497 675 1,026
Maintenance and repair 186 543 946
Services provided by third parties 331 382 1,782
Electricity and water 589 249 586
Insurances 163 86 246
Transport 148 50 98
Short-term and low-value lease 89 92 423
Other production expenses 144 113 449
Cost of sales of services, without considering depreciation and amortization $ 3,378 $ 4,318 $ 12,954