Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Operations

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Consolidated Statements of Operations - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Operating revenues:    
Total operating revenues $ 127,440 $ 81,363
Operating expenses:    
Lease operating expenses 13,039 12,937
Production taxes 8,463 5,904
Depreciation, depletion and amortization 35,417 24,433
General and administrative 8,769 5,206
Accretion expense 218 184
Acquisition expense 548 450
Total operating expenses 66,454 49,114
Income from operations 60,986 32,249
Other (income) expenses:    
Interest expense, net of capitalized amounts 460 665
(Gain) loss on derivative contracts 4,481 (15,303)
Other income (211) (708)
Total other (income) expense 4,730 (15,346)
Income before income taxes 56,256 47,595
Income tax expense 495 466
Net income 55,761 47,129
Preferred stock dividends (1,824) (1,824)
Income available to common stockholders $ 53,937 $ 45,305
Income per common share:    
Basic (in dollars per share) $ 0.27 $ 0.23
Diluted (in dollars per share) $ 0.27 $ 0.22
Shares used in computing income per common share:    
Basic (in shares) 201,921 201,054
Diluted (in shares) 202,588 201,740
Oil sales    
Operating revenues:    
Total operating revenues $ 115,286 $ 72,008
Natural gas sales    
Operating revenues:    
Total operating revenues $ 12,154 $ 9,355