| Dec'17 | Dec'16 | Dec'15 | Dec'14 | Dec'13 | Dec'12 | Dec'11 | Dec'10 | Dec'09 | Dec'08 | Dec'07 |
|---|---|---|---|---|---|---|---|---|---|---|
Operating Activities | ||||||||||
Net income | ||||||||||
306,828 | -167,513 | -945,731 | 568,032 | 204,554 | 253,562 | 259,624 | 290,807 | 256,325 | 321,915 | 309,233 |
Income from discontinued operations | ||||||||||
- | - | - | 468,389 | 62,673 | 48,941 | - | - | - | - | - |
Adjustments to reconcile net income to net cash provided by operating activities: | ||||||||||
Depreciation, depletion and amortization | ||||||||||
483,376 | 447,961 | 593,789 | 548,564 | 452,876 | 342,611 | 253,757 | 247,865 | 235,084 | - | 161,377 |
Asset impairment | ||||||||||
1,671 | 220,652 | 1,292,308 | 416,801 | 13,906 | 6,304 | 0 | 0 | - | - | - |
Accretion of discount on asset retirement obligations | ||||||||||
5,831 | 6,672 | 7,108 | 7,608 | 6,995 | 6,339 | 6,837 | 6,178 | 4,935 | 4,290 | 3,948 |
Depreciation, depletion and amortization | ||||||||||
- | - | - | - | - | - | 283,997 | - | - | 188,413 | - |
Deferred income taxes | ||||||||||
-107,737 | -57,193 | -539,735 | 302,890 | 118,600 | 128,171 | 129,041 | 133,840 | 84,616 | 188,414 | 1,162 |
Exploratory expense | ||||||||||
- | - | - | - | - | - | 10,916 | 63,668 | 9,874 | 7,620 | - |
Change in derivative fair value | ||||||||||
-17,143 | -76,490 | -233,315 | 346,646 | -48,029 | 41,819 | -36,210 | 819 | 104 | 2,580 | 970 |
Bad debt expense | ||||||||||
- | - | - | - | - | - | 2,525 | 1,565 | 10,688 | 6,471 | 5,408 |
Gain on sale of assets | ||||||||||
3,620 | 246,393 | 28,077 | -55 | 89 | 529 | 5,994 | 2,521 | 5,617 | 10,752 | 506 |
Stock-based compensation expense | ||||||||||
15,402 | 19,641 | 12,910 | 16,262 | 13,621 | 5,318 | 9,011 | - | - | - | - |
Exploration, including dry holes | ||||||||||
2,130 | 16 | 7,097 | 9,325 | 2,102 | -10,453 | - | - | - | - | - |
Discontinued operations | ||||||||||
- | - | - | 91,510 | 109,318 | 85,065 | - | - | - | - | - |
Other, net | ||||||||||
10,488 | -5,752 | -35,641 | -4,166 | -12,284 | 714 | -7,537 | 568 | -23,843 | 8,834 | 16,087 |
Net change in: | ||||||||||
Accounts receivable | ||||||||||
85,465 | -38,305 | -117,486 | -4,812 | -23,785 | -4,111 | 16,359 | 31,939 | 31,914 | -94 | -66,402 |
Inventories | ||||||||||
-1,045 | 2,948 | 655 | 3,121 | -10,817 | 561 | 14,710 | -4,022 | -30,679 | -1,274 | 13,461 |
Accounts payable | ||||||||||
4,962 | 404 | -41,560 | 18,695 | -52,946 | -14,038 | 12,978 | 18,889 | 5,539 | -36,149 | -74,927 |
Accrued taxes/income tax receivable | ||||||||||
-55,089 | -17,326 | -4,791 | -488,980 | 4,092 | -6,679 | -37,146 | 39,937 | -45,924 | 50,476 | -5,765 |
Amounts due customers, including gas supply pass-through | ||||||||||
- | - | - | - | - | - | -2,597 | 20,751 | 16,967 | -16,873 | 21,247 |
Pension and other postretirement benefit contributions | ||||||||||
-118 | -14,608 | -24,848 | -12,483 | -5,677 | -3,271 | -5,986 | -42,233 | -24,137 | -30,261 | - |
Other current assets and liabilities | ||||||||||
6,508 | 14,855 | -5,058 | -36,382 | -27,783 | -10,355 | -11,655 | -1,454 | -16,755 | 11,001 | 5,068 |
Net cash provided by operating activities | ||||||||||
569,363 | 295,057 | 719,315 | 705,483 | 927,377 | 735,737 | 761,831 | 671,022 | 679,457 | 569,233 | 484,167 |
Investing Activities | ||||||||||
Additions to oil and natural gas properties | ||||||||||
909,852 | 447,028 | 1,154,373 | 1,264,059 | 1,109,365 | 1,107,911 | 889,614 | 434,121 | 340,107 | 460,237 | 373,857 |
Acquisitions | ||||||||||
276,840 | 147,879 | 87,410 | 70,730 | 31,331 | 139,563 | 310,193 | 410,348 | 185,131 | 17,914 | 56,323 |
Proceeds from asset sales and sale of Alabama Gas Corporation | ||||||||||
3,695 | 528,775 | 394,521 | 1,347,725 | 160,986 | 2,562 | 7,987 | 3,155 | 7,923 | 16,224 | 1,295 |
Purchase of short-term investments | ||||||||||
0 | 0 | 919,000 | 473,000 | 310,000 | 0 | 0 | 154,880 | 0 | - | - |
Sale of short-term investments | ||||||||||
0 | 0 | 919,000 | 473,000 | 310,000 | 0 | 0 | 154,965 | 0 | - | - |
Discontinued operations | ||||||||||
- | - | - | -51,850 | -73,341 | -76,740 | - | - | - | - | - |
Other, net | ||||||||||
- | - | - | - | 559 | 530 | 1,679 | 1,464 | 1,808 | 2,656 | 2,994 |
Net cash used in investing activities | ||||||||||
-1,182,997 | -66,132 | -847,262 | -38,914 | -1,053,610 | -1,322,182 | -1,193,499 | -842,693 | -519,123 | -464,583 | -431,879 |
Financing Activities | ||||||||||
Payment of dividends on common stock | ||||||||||
0 | 0 | 6,074 | 34,304 | 41,993 | 40,392 | 38,922 | 37,377 | 35,542 | 34,620 | 33,116 |
Issuance of common stock, net | ||||||||||
273 | 381,261 | 399,600 | 23,053 | 17,780 | 1,224 | 6,415 | 685 | 621 | 277 | 2,051 |
Taxes paid for shares withheld | ||||||||||
3,293 | 2,609 | 4,723 | - | - | - | - | - | - | - | - |
Purchase and retirement of shares | ||||||||||
- | - | - | 14,913 | 0 | 0 | - | - | - | - | - |
Issuance of long-term debt | ||||||||||
- | - | - | - | 600,000 | 0 | 749,952 | 0 | 0 | - | 45,000 |
Reduction of long-term debt | ||||||||||
24,000 | 0 | 0 | 600,000 | 350,000 | 1,000 | 5,547 | 150,729 | 1,035 | 10,910 | 155,289 |
Payment of debt issuance costs | ||||||||||
- | - | - | 10,901 | 2,740 | 0 | - | - | - | - | 494 |
Net change in credit facility | ||||||||||
255,000 | -222,500 | -262,500 | 4,000 | 77,000 | 566,000 | -290,000 | 305,000 | -62,000 | -72,000 | 76,000 |
Tax benefit (expense) on stock compensation | ||||||||||
0 | -256 | 1,064 | 5,906 | 3,142 | 550 | 986 | 907 | 606 | 17,093 | 10,937 |
Discontinued operations | ||||||||||
- | - | - | -35,113 | -27,105 | 61,744 | - | - | - | - | - |
Other | ||||||||||
- | - | - | - | - | -1,518 | -4,334 | 0 | -317 | - | 1,003 |
Net cash provided by financing activities | ||||||||||
227,980 | 155,896 | 127,367 | -670,272 | 122,084 | 586,608 | 418,550 | 118,486 | -97,667 | -100,160 | -53,908 |
Net change in cash and cash equivalents | ||||||||||
-385,654 | 384,821 | -580 | -3,703 | -4,149 | 163 | -13,118 | -53,185 | 62,667 | 4,490 | -1,620 |