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v3.19.3.a.u2

Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Net premiums earned | $ 668,359 | $ 653,620 | $ 642,619 | $ 632,573 | $ 625,288 | $ 614,277 | $ 604,836 | $ 591,828 | $ 2,597,171 | $ 2,436,229 | $ 2,291,027
Net investment income earned | 57,594 | 55,826 | 58,505 | 50,618 | 54,109 | 52,443 | 45,553 | 43,231 | 222,543 | 195,336 | 161,882
Net realized and unrealized gains (losses) | (873) | (2,183) | 4,027 | 13,451 | (37,935) | (4,787) | (1,652) | (10,549) | 14,422 | (54,923) | 6,359
Other income | 3,820 | 3,162 | 3,053 | 2,320 | 1,542 | 2,538 | 3,179 | 2,179 | 12,355 | 9,438 | 10,716
Total revenues | 728,900 | 710,425 | 708,204 | 698,962 | 643,004 | 664,471 | 651,916 | 626,689 | 2,846,491 | 2,586,080 | 2,469,984
Income before federal income tax | 101,293 | 71,178 | 90,225 | 73,694 | 52,135 | 67,130 | 72,525 | 19,931 | 336,390 | 211,721 | 261,968
Net income | $ 81,859 | $ 56,150 | $ 72,266 | $ 61,348 | $ 45,760 | $ 55,435 | $ 58,819 | $ 18,925 | $ 271,623 | $ 178,939 | $ 168,826
Basic net income per share | $ 1.38 | $ 0.94 | $ 1.22 | $ 1.04 | $ 0.77 | $ 0.94 | $ 1.00 | $ 0.32 | $ 4.57 | $ 3.04 | $ 2.89
Diluted net income per share | $ 1.36 | $ 0.93 | $ 1.21 | $ 1.02 | $ 0.76 | $ 0.93 | $ 0.99 | $ 0.32 | $ 4.53 | $ 3.00 | $ 2.84

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