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Selected Quarterly Financial Data (Unaudited) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Selected Quarterly Financial Data (Unaudited) | Note 19—Selected Quarterly Financial Data (Unaudited) 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) |  |  |  |  |  |
2019 |  |  |  |  |  |  |
Revenues | $ | 476,111 |  |  | $ | 462,101 |  |  | $ | 455,606 |  |  | $ | 446,960 |
Operating costs and expenses | $ | 468,366 |  |  | $ | 439,094 |  |  | $ | 431,883 |  |  | $ | 423,556 |
Income before income taxes | $ | 11,892 |  |  | $ | 23,617 |  |  | $ | 23,716 |  |  | $ | 25,871 |
Net income | $ | 9156 |  |  | $ | 18,186 |  |  | $ | 18,344 |  |  | $ | 18,895 |
Basic earnings per common share | $ | 0.12 |  |  | $ | 0.24 |  |  | $ | 0.25 |  |  | $ | 0.25 |
Diluted earnings per common share | $ | 0.12 |  |  | $ | 0.24 |  |  | $ | 0.25 |  |  | $ | 0.25 |
Cash dividends declared per common share | $ | 0.19750 |  |  | $ | 0.19875 |  |  | $ | 0.20000 |  |  | $ | 0.20125 |
2018 |  |  |  |  |  |  |
Revenues1 | $ | 500,562 |  |  | $ | 501,587 |  |  | $ | 505,500 |  |  | $ | 494,952 |
Operating costs and expenses | $ | 502,773 |  |  | $ | 470,405 |  |  | $ | 474,975 |  |  | $ | 456,612 |
(Loss) income before income taxes | $ | (1,395) |  |  | $ | 33,316 |  |  | $ | 32,982 |  |  | $ | 35,007 |
Net income | $ | 72 |  |  | $ | 25,814 |  |  | $ | 26,086 |  |  | $ | 31,552 |
Basic earnings per common share | $ | 0.00 |  |  | $ | 0.35 |  |  | $ | 0.35 |  |  | $ | 0.43 |
Diluted earnings per common share | $ | 0.00 |  |  | $ | 0.35 |  |  | $ | 0.35 |  |  | $ | 0.42 |
Cash dividends declared per common share | $ | 0.19250 |  |  | $ | 0.19375 |  |  | $ | 0.19500 |  |  | $ | 0.19625 |
1.Prior year revenues were revised for the presentation of the revenue associated with our wholly-owned captive insurance subsidiary. Refer to Note 1 - Description of Business and Significant Accounting Policies herein for additional disclosure regarding the revision.

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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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