Three Months Ended March 31, | Year Ended December 31, | ||||||||||||||||||
2016 | 2015 | 2014 | 2013 | 2012 | 2011 | ||||||||||||||
(in thousands, except ratios) | |||||||||||||||||||
Pretax income (loss) from continuing operations | $ | (542,085 | ) | $ | (722,861 | ) | $ | 1,064,699 | $ | 278,611 | $ | (83,517 | ) | $ | 339,001 | ||||
Add: Fixed charges | 36,705 | 155,510 | 117,147 | 102,758 | 77,841 | 58,030 | |||||||||||||
Add: Amortization of capitalized interest | 3,058 | 9,116 | 11,448 | 11,784 | 9,095 | 5,107 | |||||||||||||
Less: Capitalized interest | (5,081 | ) | (25,051 | ) | (16,165 | ) | (10,952 | ) | (12,135 | ) | (10,785 | ) | |||||||
Earnings before fixed charges | $ | (507,403 | ) | $ | (583,286 | ) | $ | 1,177,129 | $ | 382,201 | $ | (8,716 | ) | $ | 391,353 | ||||
Fixed charges: | |||||||||||||||||||
Interest expense (1) | $ | 31,088 | $ | 128,149 | $ | 98,554 | $ | 89,711 | $ | 63,720 | $ | 45,849 | |||||||
Capitalized interest | 5,081 | 25,051 | 16,165 | 10,952 | 12,135 | 10,785 | |||||||||||||
Interest expense component of rent (2) | 536 | 2,310 | 2,428 | 2,095 | 1,986 | 1,396 | |||||||||||||
Total fixed charges | $ | 36,705 | $ | 155,510 | $ | 117,147 | $ | 102,758 | $ | 77,841 | $ | 58,030 | |||||||
Ratio of earnings to fixed charges | — | — | 10.0 | 3.7 | — | 6.7 | |||||||||||||
Insufficient coverage | $ | 544,108 | $ | 738,796 | $ | — | $ | — | $ | 86,557 | $ | — |