Quarterly report pursuant to Section 13 or 15(d)

Other Non-Current Assets (Details)

v3.19.1
Other Non-Current Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Jan. 01, 2019
Dec. 31, 2018
Operating Leased Assets [Line Items]      
Land lease and purchase options $ 4,409   $ 4,115
Permitting costs 12,838   12,585
Right of use asset - leases (Note 12) 17,447 $ 17,900  
Other 1,229   1,959
Total other non-current assets $ 35,923   $ 18,659
Maximum terms (in years) 60 years    
Minimum      
Operating Leased Assets [Line Items]      
Term of lease (in years) 4 years    
Maximum      
Operating Leased Assets [Line Items]      
Term of lease (in years) 5 years