XML 108 R92.htm IDEA: XBRL DOCUMENT v3.10.0.1
Debt (Australia - Ravenhall) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2018
USD ($)
Dec. 31, 2018
AUD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]      
Revolver $ 490,843   $ 270,559
Australian Subsidiary's Non Recourse Debt      
Debt Instrument [Line Items]      
Debt instrument basis spread on variable rate 1.40%    
National Australia Bank Limited | Non Recourse Debt | Construction Facility      
Debt Instrument [Line Items]      
Debt instrument basis spread on variable rate 2.00%    
Ravenhall | National Australia Bank Limited | Non Recourse Debt      
Debt Instrument [Line Items]      
Lump sum due at completion $ 218,700 $ 310,000,000  
Ravenhall | National Australia Bank Limited | Non Recourse Debt | Construction Facility      
Debt Instrument [Line Items]      
Maximum borrowing capacity 558,100 $ 791,000,000  
Revolver $ 318,100