Quarterly report pursuant to Section 13 or 15(d)

Supplemental Cash Flow Information (Details)

v3.5.0.2
Supplemental Cash Flow Information (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Supplemental Cash Flow Information [Abstract]    
Cash paid during the period for interest, net of amounts capitalized $ 29,879 $ 48,271
Non-cash conveyance of assets 0 13,169
Balance in property, plant and equipment, net funded with accounts payable and accrued liabilities $ 491,400 $ 356,300