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Schedule IV - Reinsurance (Details) - USD ($) $ 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
Direct Amount |  |  |  |  |  |  |  |  | $ 2,993,157 | $ 2,808,764 | $ 2,647,488
Assumed From Other Companies |  |  |  |  |  |  |  |  | 24,399 | 25,831 | 25,831
Ceded to Other Companies |  |  |  |  |  |  |  |  | 420,385 | 398,366 | 382,292
Total 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
Percentage of Amount Assumed to Net |  |  |  |  |  |  |  |  | 1.00% | 1.00% | 1.00%
Accident and Health Insurance Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Direct Amount |  |  |  |  |  |  |  |  | $ 17 | $ 19 | $ 24
Assumed From Other Companies |  |  |  |  |  |  |  |  | 0 | 0 | 0
Ceded to Other Companies |  |  |  |  |  |  |  |  | 17 | 19 | 24
Total Net Premiums Earned |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0
Percentage of Amount Assumed to Net |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 0.00%
Property and liability insurance [Member] |  |  |  |  |  |  |  |  |  |  |
Direct Amount |  |  |  |  |  |  |  |  | $ 2,993,140 | $ 2,808,745 | $ 2,647,464
Assumed From Other Companies |  |  |  |  |  |  |  |  | 24,399 | 25,831 | 25,831
Ceded to Other Companies |  |  |  |  |  |  |  |  | 420,368 | 398,347 | 382,268
Total Net Premiums Earned |  |  |  |  |  |  |  |  | $ 2,597,171 | $ 2,436,229 | $ 2,291,027
Percentage of Amount Assumed to Net |  |  |  |  |  |  |  |  | 1.00% | 1.00% | 1.00%

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