Quarterly report pursuant to Section 13 or 15(d)

Supplemental Cash Flow Information (Details)

v3.10.0.1
Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Supplemental Cash Flow Information [Abstract]    
Costs relating to construction included in accounts payable and accrued expenses $ 14,307 $ 27,090
Interest paid, net of interest capitalized $ 46,154 $ 43,102