| Summary of Financial Data by Segment |
Financial data by segment for the three and nine months ended September 30, 2019 and 2018 is as follows: | | | | | | | | | | | | Three Months Ended September 30, | | | | | 2019 | | | 2018 | | | | | (in thousands) | | | | | | | | | | | | | | | | | | | | | | $ | 98,324 | | | $ | 84,251 | | | | | 91,497 | | | | 103,410 | | | | | | | | | | | | | | | 189,821 | | | | 187,661 | | | | | 7,390 | | | | 6,620 | | | | | (369 | ) | | | 3,464 | | Equity in earnings of DFSC | | | — | | | | 733 | | | | | 1,168 | | | | 1,426 | | | | | | | | | | | | | | $ | 198,010 | | | $ | 199,904 | | | | | | | | | | | | Income before income tax expense: | | | | | | | | | Underwriting income (loss): | | | | | | | | | | | $ | 2,521 | | | $ | 2,125 | | | | | (3,312 | ) | | | (12,210 | ) | | | | | | | | | | | | | | (791 | ) | | | (10,085 | ) | | | | (399 | ) | | | 332 | | | | | | | | | | | | | | | (1,190 | ) | | | (9,753 | ) | | | | 7,390 | | | | 6,620 | | | | | (369 | ) | | | 3,464 | | Equity in earnings of DFSC | | | — | | | | 733 | | | | | 474 | | | | 213 | | | | | | | | | | | | Income before income tax expense | | $ | 6,305 | | | $ | 1,277 | | | | | | | | | | | |
| | | | | | | | | | | | Nine Months Ended September 30, | | | | | 2019 | | | 2018 | | | | | (in thousands) | | | | | | | | | | | | | | | | | | | | | | $ | 284,593 | | | $ | 251,029 | | | | | 282,065 | | | | 304,111 | | | | | | | | | | | | | | | 566,658 | | | | 555,140 | | | | | 21,728 | | | | 19,341 | | | | | 19,294 | | | | 4,062 | | Equity in earnings of DFSC | | | 295 | | | | 2,153 | | | | | 3,538 | | | | 4,326 | | | | | | | | | | | | | | $ | 611,513 | | | $ | 585,022 | | | | | | | | | | | | Income (loss) before income tax expense (benefit): | | | | | | | | | Underwriting income (loss): | | | | | | | | | | | $ | 4,946 | | | $ | (17,935 | ) | | | | (10,077 | ) | | | (42,358 | ) | | | | | | | | | | | | | | (5,131 | ) | | | (60,293 | ) | | | | 1,431 | | | | 5,106 | | | | | | | | | | | | | | | (3,700 | ) | | | (55,187 | ) | | | | 21,728 | | | | 19,341 | | | | | 19,294 | | | | 4,062 | | Equity in earnings of DFSC | | | 295 | | | | 2,153 | | | | | 1,070 | | | | 1,040 | | | | | | | | | | | | Income (loss) before income tax expense (benefit) | | $ | 38,687 | | | $ | (28,591 | ) |
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