Annual report pursuant to Section 13 and 15(d)

Summary of Unaudited Quarterly Financial Information (Tables)

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Summary of Unaudited Quarterly Financial Information (Tables)
12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following financial information reflects all normal recurring adjustments, which are, in the opinion of management, necessary for a fair statement of the results and cash flows of interim periods. Summarized quarterly data for 2018 and 2017 are as follows (in thousands, except per share amounts):
  First Quarter Second Quarter Third Quarter Fourth Quarter
2018
Total revenues $ 56,157  $ 90,043  $ 45,663  $ 59,590 
Total operating costs and expenses 19,116  19,868  22,301  26,441 
Income tax (expense) benefit (10,033) (22,419) (11,864) 14,307 
Net income (loss) 45,279  73,160  67,362  (42,482)
Basic per share amounts:
Net income (loss) $ 2.13  $ 3.45  $ 3.19  $ (2.02)
Diluted per share amounts:
Net income (loss) $ 1.83  $ 2.99  $ 2.80  $ (2.02)
Weighted average shares—basic 21,209  21,212  21,148  21,071 
Weighted average shares—diluted 24,800  24,438  24,052  21,071 
2017
Total revenues $ 29,267  $ 27,995  $ 33,375  $ 50,465 
Total operating costs and expenses 19,051  14,980  16,882  22,113 
Income tax expense (1,114) (2,242) (3,645) (37,674)
Net income (loss) 5,079  6,058  8,426  (7,007)
Basic per share amounts:
Net income (loss) $ 0.24  $ 0.29  $ 0.40  $ (0.33)
Diluted per share amounts:
Net income (loss) $ 0.22  $ 0.26  $ 0.36  $ (0.33)
Weighted average shares—basic 20,938  21,013  21,071  21,109 
Weighted average shares—diluted 23,019  23,216  23,551  21,109