Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Data (Details)

v3.6.0.2
Selected Quarterly Financial Data (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 115,213 $ 107,403 $ 99,655 $ 77,715 $ 104,064 $ 126,228 $ 149,066 $ 127,907 $ 399,986 $ 507,265 $ 948,708
Operating income (loss) 21,319 [1] (58,276) [1] (126,997) [1] (166,614) [1] (60,816) [1] (468,573) [1] (278,806) [1] (337,508) [1] (330,568) (1,145,703) 62,068
Net income (loss) $ 16,483 [1] $ 45,928 [1] $ (120,922) [1] $ (190,509) [1] $ (51,606) [1] $ (477,568) [1] $ (260,449) [1] $ (255,095) [1] $ (249,020) $ (1,044,718) $ (11,661)
Basic and diluted income (loss) per common share $ 0.12 [1],[2] $ 0.48 [1],[2] $ (1.58) [1],[2] $ (2.49) [1],[2] $ (0.68) [1],[2] $ (6.29) [1],[2] $ (3.43) [1],[2] $ (3.36) [1],[2] $ (2.60) $ (13.76) $ (0.16)
[1] During 2016, we recorded in first, second and third quarter ceiling test write-downs of oil and natural gas properties of $116.6 million, $104.6 million and $57.9 million, respectively. In the third quarter of 2016, we recorded a gain on exchange of debt of $123.9 million. During 2015, we recorded in first, second, third and fourth quarter ceiling test write-downs of oil and natural gas properties of $260.4 million, $252.8 million, $441.6 million and $32.4 million, respectively. See Note 1 for additional information.
[2] The sum of the individual quarterly earnings (loss) per share does not agree with the year loss per share because each quarterly calculation is based on the income for that quarter and the weighted average number of shares outstanding during that quarter.