| Selected Quarterly Financial Data |
The following tables summarize the unaudited quarterly financial data for the last two fiscal years. | | | | | | | | | | | | | | | | | | First Quarter | | Second Quarter | | Third Quarter | | Fourth Quarter | | (in thousands, except per share amounts) | 2017 | | | | | | | | Revenues | $ | 404,490 |
| | $ | 470,876 |
| | $ | 491,355 |
| | $ | 499,410 |
| Operating costs and expenses | $ | 373,780 |
| | $ | 439,313 |
| | $ | 459,864 |
| | $ | 466,285 |
| Income before income taxes | $ | 32,279 |
| | $ | 33,078 |
| | $ | 32,930 |
| | $ | 34,678 |
| Net income | $ | 22,017 |
| | $ | 22,551 |
| | $ | 23,472 |
| | $ | 20,186 |
| Basic earnings per common share | $ | 0.30 |
| | $ | 0.31 |
| | $ | 0.32 |
| | $ | 0.27 |
| Diluted earnings per common share | $ | 0.30 |
| | $ | 0.30 |
| | $ | 0.31 |
| | $ | 0.27 |
| Cash dividends declared per common share | $ | 0.18750 |
| | $ | 0.18875 |
| | $ | 0.19000 |
| | $ | 0.19125 |
| 2016 | | | | | | | | Revenues | $ | 384,807 |
| | $ | 386,556 |
| | $ | 392,734 |
| | $ | 398,565 |
| Operating costs and expenses | $ | 355,390 |
| | $ | 357,875 |
| | $ | 363,522 |
| | $ | 368,122 |
| Income before income taxes | $ | 29,604 |
| | $ | 29,683 |
| | $ | 30,571 |
| | $ | 30,529 |
| Net income | $ | 18,626 |
| | $ | 18,760 |
| | $ | 19,711 |
| | $ | 20,299 |
| Basic earnings per common share | $ | 0.26 |
| | $ | 0.26 |
| | $ | 0.27 |
| | $ | 0.28 |
| Diluted earnings per common share | $ | 0.26 |
| | $ | 0.26 |
| | $ | 0.27 |
| | $ | 0.28 |
| Cash dividends declared per common share | $ | 0.18250 |
| | $ | 0.18375 |
| | $ | 0.18500 |
| | $ | 0.18625 |
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