XML 236 R178.htm IDEA: XBRL DOCUMENT v3.20.1
Financial obligations - Lease liabilities related to right in use (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
item
Jan. 01, 2019
USD ($)
Dec. 31, 2018
USD ($)
Disclosure of Financial obligations [Line Items]      
Lease liabilities $ 7,503 $ 261,538  
Current lease liabilities 3,692    
Non-current lease liabilities $ 3,811    
Lease term 10 years    
Number of renewal options | item 2    
Lease renewal term 5 years    
Future minimum rentals payable $ 5,167   $ 7,330
Less than one year [member]      
Disclosure of Financial obligations [Line Items]      
Future minimum rentals payable 1,470   1,543
Later than one year and not later than five years [member]      
Disclosure of Financial obligations [Line Items]      
Future minimum rentals payable 3,697   $ 5,787
Buildings      
Disclosure of Financial obligations [Line Items]      
Lease liabilities 5,296    
Transportation units      
Disclosure of Financial obligations [Line Items]      
Lease liabilities 1,429    
Machinery and equipment      
Disclosure of Financial obligations [Line Items]      
Lease liabilities $ 778