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Summarized Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2018
Summarized Quarterly Financial Data (Unaudited) [Abstract] |
Summarized Quarterly Financial Data (Unaudited) | 19. Summarized Quarterly Financial Data (Unaudited) Quarterly financial information for 2017 and 2018 is as follows (in thousands except per share data):
|  | Quarter |
2017 |  | First |  | Second |  | Third |  | Fourth |
Revenues |  | $ | 114,912 |  | $ | 112,720 |  | $ | 108,512 |  | $ | 118,707 |
Income from operations |  |  | 18,443 |  |  | 13,854 |  |  | 8,224 |  |  | 11,688 |
Net income (loss) |  |  | 10,578 |  |  | 10,302 |  |  | 6,227 |  |  | (6,495) |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.00 |  | $ | 0.96 |  | $ | 0.58 |  | $ | (0.61) |
Diluted |  | $ | 0.95 |  | $ | 0.92 |  | $ | 0.56 |  | $ | (0.61) |
|  | Quarter |
2018 |  | First |  | Second |  | Third |  | Fourth |
Revenues |  | $ | 116,469 |  | $ | 114,668 |  | $ | 160,945 |  | $ | 242,103 |
Income (loss) from operations |  |  | 11,328 |  |  | 4,184 |  |  | (57,127) |  |  | 18,875 |
Net income (loss) |  |  | 9,467 |  |  | 5,188 |  |  | (52,781) |  |  | 22,455 |
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.88 |  | $ | 0.48 |  | $ | (2.97) |  | $ | 1.05 |
Diluted |  | $ | 0.84 |  | $ | 0.46 |  | $ | (2.97) |  | $ | 1.02 |

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- References No definition available. + Details
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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -URI http://asc.fasb.org/topic&trid=2126967 + Details
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