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Reinsurance (List of Direct, Assumed, and Ceded Reinsurance Amounts) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Premiums written: |  |  |  |
Direct | $ 631,429 | $ 592,858 | $ 1,851,620 | $ 1,723,063
Assumed | 6,099 | 5,780 | 17,140 | 19,467
Ceded premiums written | (92,503) | (103,517) | (273,514) | (290,836)
Net | 545,025 | 495,121 | 1,595,246 | 1,451,694
Premiums earned: |  |  |  |
Direct | 590,716 | 548,734 | 1,728,865 | 1,630,347
Assumed | 5,830 | 6,789 | 16,831 | 27,359
Ceded premiums earned | (89,156) | (92,884) | (271,874) | (274,947)
Net | 507,390 | 462,639 | 1,473,822 | 1,382,759
Loss and loss expense incurred: |  |  |  |
Direct | 306,635 | 304,525 | 935,529 | 995,581
Assumed | 4,224 | 5,362 | 13,114 | 20,218
Ceded loss and loss expense incurred | (25,698) | (38,955) | (86,922) | (126,526)
Net | 285,161 | 270,932 | 861,721 | 889,273
National Flood Insurance Program [Member] |  |  |  |
Premiums written: |  |  |  |
Ceded premiums written | (62,463) | (69,922) | (178,784) | (193,000)
Premiums earned: |  |  |  |
Ceded premiums earned | (58,340) | (60,761) | (176,119) | (178,260)
Loss and loss expense incurred: |  |  |  |
Ceded loss and loss expense incurred | $ (15,382) | $ (14,008) | $ (36,315) | $ (48,099)

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