Annual report pursuant to Section 13 and 15(d)

Indebtedness, Schedule of Interest Expense (Details)

v3.6.0.2
Indebtedness, Schedule of Interest Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Debt Disclosure [Abstract]      
Interest expense on debt $ 33,204 $ 33,162 $ 37,850
Letters of credit and finance charges 30,815 40,058 65,156
Amortization of debt issuance costs 3,052 3,595 3,759
Write-off of unamortized debt issuance costs 0 0 558
Amortization of original issuance discount 6,831 6,273 6,306
Write-off of unamortized original issuance discount 0 0 391
Less: Capitalized interest (4,185) (3,262) (2,877)
Total interest expense $ 69,717 $ 79,826 $ 111,143