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Effects of Reinsurance on Premiums (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Insurance [Abstract] |  |  |
Direct Premiums Written | $ 1,329,129 | $ 1,411,558 | $ 1,278,504
Assumed Premiums Written | 316 | 45,305 | 101,764
Ceded Premiums Written | (864,725) | (755,871) | (633,275)
Premiums Written, Net | 464,720 | 700,992 | 746,993
Increase (Decrease) in Direct Unearned Premiums | 59,547 | (66,483) | (59,660)
Increase (Decrease) in Assumed Unearned Premiums | 19,451 | 16,600 | 12,918
Increase (Decrease) in Ceded Unearned Premiums | 46,043 | 114,554 | 52,149
Increase (Decrease) in Unearned Premiums | 125,041 | 64,671 | 5,407
Direct Premiums Earned, Property and Casualty | 1,388,676 | 1,345,075 | 1,218,844
Assumed Premiums Earned, Property and Casualty | 19,767 | 61,905 | 114,682
Ceded Premiums Earned | (818,682) | (641,317) | (581,126)
Premiums Earned, Net | 589,761 | 765,663 | 752,400
Direct Losses and LAE Incurred | 1,319,606 | 1,186,401 | 1,003,767
Assumed Losses and LAE Incurred | 13,969 | 67,119 | 44,914
Ceded Losses and LAE Incurred | (911,441) | (645,204) | (549,188)
Net Losses and LAE Incurred | $ 422,134 | $ 608,316 | $ 499,493

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