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Reinsurance (Tables) | 6 Months Ended
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Jun. 30, 2021
Reinsurance Disclosures [Abstract] |
Reinsurance Recoverable, Credit Quality Indicator [Table Text Block] |
|  | June 30, 2021
($ in thousands) |  | Current |  | Past Due |  | Total Reinsurance Recoverables
Financial strength rating of rated reinsurers |  |  |  |  |  |
A++ |  | $ | 40,382 |  |  | $ | 14 |  |  | $ | 40,396 |
A+ |  | 357,328 |  |  | 2,554 |  |  | 359,882 |
A |  | 105,600 |  |  | 87 |  |  | 105,687 |
A- |  | 2,054 |  |  | — |  |  | 2,054 |
B++ |  | 135 |  |  | 244 |  |  | 379 |
B+ |  | — |  |  | — |  |  | — |
Total rated reinsurers |  | $ | 505,499 |  |  | $ | 2,899 |  |  | $ | 508,398 |
Non-rated reinsurers |  |  |  |  |  |
Federal and state pools |  | $ | 86,512 |  |  | $ | — |  |  | $ | 86,512 |
Other than federal and state pools |  | 3,474 |  |  | 274 |  |  | 3,748 |
Total non-rated reinsurers |  | $ | 89,986 |  |  | $ | 274 |  |  | $ | 90,260 |
Total reinsurance recoverable, gross |  | $ | 595,485 |  |  | $ | 3,173 |  |  | $ | 598,658 |
Less: allowance for credit losses 1 |  |  |  |  |  | (1,777) |
Total reinsurance recoverable, net |  |  |  |  |  | $ | 596,881 |
|  | December 31, 2020
($ in thousands) |  | Current |  | Past Due |  | Total Reinsurance Recoverables
Financial strength rating of rated reinsurers |  |  |  |  |  |
A++ |  | $ | 37,464 |  |  | $ | 102 |  |  | $ | 37,566 |
A+ |  | 354,846 |  |  | 2,452 |  |  | 357,298 |
A |  | 105,652 |  |  | 415 |  |  | 106,067 |
A- |  | 2,139 |  |  | — |  |  | 2,139 |
B++ |  | 56 |  |  | 324 |  |  | 380 |
B+ |  | — |  |  | — |  |  | — |
Total rated reinsurers |  | $ | 500,157 |  |  | $ | 3,293 |  |  | $ | 503,450 |
Non-rated reinsurers |  |  |  |  |  |
Federal and state pools |  | $ | 82,575 |  |  | $ | — |  |  | $ | 82,575 |
Other than federal and state pools |  | 2,676 |  |  | 568 |  |  | 3,244 |
Total non-rated reinsurers |  | $ | 85,251 |  |  | $ | 568 |  |  | $ | 85,819 |
Total reinsurance recoverable, gross |  | $ | 585,408 |  |  | $ | 3,861 |  |  | $ | 589,269 |
Less: allowance for credit losses 1 |  |  |  |  |  | (1,777) |
Total reinsurance recoverable, net |  |  |  |  |  | $ | 587,492 |
Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block] |
($ in thousands) |  | Quarter ended June 30, |  | Six Months ended June 30,
|  | 2021 |  | 2020 |  | 2021 |  | 2020
Balance at beginning of period |  | $ | 1,840 |  |  | 1,502 |  |  | $ | 1,777 |  |  | 4,400 |
Cumulative effect adjustment 1 |  | — |  |  | — |  |  | — |  |  | (2,903) |
Balance at beginning of period, as adjusted |  | $ | 1,840 |  |  | 1,502 |  |  | $ | 1,777 |  |  | 1,497 |
Current period provision for expected credit losses |  | (63) |  |  | 894 |  |  | — |  |  | 899 |
Write-offs charged against the allowance for credit losses |  | — |  |  | — |  |  | — |  |  | — |
Recoveries |  | — |  |  | — |  |  | — |  |  | — |
Allowance for credit losses, end of period |  | $ | 1,777 |  |  | 2,396 |  |  | $ | 1,777 |  |  | 2,396 |
1 Represents the impact of our adoption of ASU 2016-13, Financial Instruments - Credit Losses.
Schedule of List Of Direct, Assumed, And Ceded Reinsurance Amounts |
|  | Quarter ended June 30, |  | Six Months ended June 30,
($ in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Premiums written: |  |  |  |  |  |  |  |
Direct |  | $ | 954,770 |  |  | 834,643 |  |  | $ | 1,863,544 |  |  | 1,581,074 |
Assumed |  | 4,872 |  |  | 6,410 |  |  | 10,405 |  |  | 12,453 |
Ceded |  | (126,437) |  |  | (116,301) |  |  | (242,566) |  |  | (221,448) |
Net |  | $ | 833,205 |  |  | 724,752 |  |  | $ | 1,631,383 |  |  | 1,372,079 |
Premiums earned: |  |  |  |  |  |  |  |
Direct |  | $ | 853,456 |  |  | 733,647 |  |  | $ | 1,690,825 |  |  | 1,488,538 |
Assumed |  | 4,411 |  |  | 6,055 |  |  | 10,087 |  |  | 12,228 |
Ceded |  | (117,349) |  |  | (109,031) |  |  | (235,434) |  |  | (218,392) |
Net |  | $ | 740,518 |  |  | 630,671 |  |  | $ | 1,465,478 |  |  | 1,282,374 |
Loss and loss expenses incurred: |  |  |  |  |  |  |  |
Direct |  | $ | 460,073 |  |  | 451,013 |  |  | $ | 901,580 |  |  | 876,808 |
Assumed |  | 3,217 |  |  | 4,300 |  |  | 6,664 |  |  | 9,198 |
Ceded |  | (41,667) |  |  | (51,364) |  |  | (73,220) |  |  | (81,733) |
Net |  | $ | 421,623 |  |  | 403,949 |  |  | $ | 835,024 |  |  | 804,273 |
Schedule of Ceded Premiums and Losses Related to Flood Operations |
Ceded to NFIP |  | Quarter ended June 30, |  | Six Months ended June 30,
($ in thousands) |  | 2021 |  | 2020 |  | 2021 |  | 2020
Ceded premiums written |  | $ | (75,081) |  |  | (74,187) |  |  | $ | (140,823) |  |  | (136,274) |
Ceded premiums earned |  | (66,833) |  |  | (67,369) |  |  | (134,352) |  |  | (134,230) |
Ceded loss and loss expenses incurred |  | (18,941) |  |  | (12,991) |  |  | (21,148) |  |  | (18,087) |

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