|
Results of Operations Related to Reinsurance Agreements (Detail) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Related Party Transaction [Line Items] | ||||
| Change in unearned premium - ceded | $ (96,212) | $ (33,055) | $ (199,560) | $ (194,135) |
| Incurred loss and loss adjustment expense - ceded | 255,646 | 185,352 | 667,362 | 484,056 |
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Related Party Transactions
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| Related Party Transaction [Line Items] | ||||
| Premium written - ceded | (189,655) | (173,218) | (576,936) | (513,859) |
| Change in unearned premium - ceded | 10,541 | 13,008 | 61,502 | 103,022 |
| Earned premium - ceded | (179,114) | (160,210) | (515,434) | (410,837) |
| Ceding commission on premium written | 51,955 | 48,339 | 157,224 | 132,224 |
| Ceding commission - deferred | (2,095) | (6,557) | (16,540) | (20,269) |
| Ceding commission - earned | 49,860 | 41,782 | 140,684 | 111,955 |
| Incurred loss and loss adjustment expense - ceded | $ 158,646 | $ 94,371 | $ 407,426 | $ 275,434 |