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v3.22.4

Supplementary Insurance Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Premium Revenue | $ 602,471 | $ 595,610 | $ 567,699
Benefits, Claims, Losses And Settlement Expenses | 359,228 | 384,964 | 336,201
Amortization of Deferred Policy Acquisition Costs | 150,946 | 144,944 | 140,915
Net Written Premium | 591,331 | 580,068 | 548,167
Commercial Specialty |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred Policy Acquisition Costs | 34,953 | 33,264 | 28,701
Future Policy Benefits, Losses, Claims And Loss Expenses | 498,102 | 459,174 | 393,933
Unearned Premiums | 162,588 | 156,842 | 135,015
Other Policy and Benefits Payable | 0 | 0 | 0
Premium Revenue | 377,953 | 331,503 | 277,892
Benefits, Claims, Losses And Settlement Expenses | 225,389 | 202,176 | 140,388
Amortization of Deferred Policy Acquisition Costs | 85,530 | 74,337 | 60,806
Net Written Premium | 383,682 | 353,105 | 288,745
Reinsurance Operations |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred Policy Acquisition Costs | 25,907 | 18,366 | 8,910
Future Policy Benefits, Losses, Claims And Loss Expenses | 180,203 | 102,006 | 57,881
Unearned Premiums | 72,779 | 55,355 | 28,329
Other Policy and Benefits Payable | 0 | 0 | 0
Premium Revenue | 141,287 | 76,663 | 46,105
Benefits, Claims, Losses And Settlement Expenses | 85,385 | 48,064 | 28,718
Amortization of Deferred Policy Acquisition Costs | 49,673 | 25,027 | 14,199
Net Written Premium | 158,711 | 103,690 | 55,616
Exited Lines |  |  |
Supplementary Insurance Information, by Segment [Line Items] |  |  |
Deferred Policy Acquisition Costs | 4,034 | 8,701 | 27,584
Future Policy Benefits, Losses, Claims And Loss Expenses | 154,099 | 198,724 | 210,997
Unearned Premiums | 33,986 | 104,369 | 128,151
Other Policy and Benefits Payable | 0 | 0 | 0
Premium Revenue | 83,231 | 187,444 | 243,702
Benefits, Claims, Losses And Settlement Expenses | 48,454 | 134,724 | 167,095
Amortization of Deferred Policy Acquisition Costs | 15,743 | 45,580 | 65,910
Net Written Premium | $ 48,938 | $ 123,273 | $ 203,806

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