v3.25.1
Reinsurance - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reinsurance Disclosures [Abstract]
Recoveries received under reinsurance contracts
$ 36,285
$ 72,260
X
- Definition
Reinsurance contracts recoveries received.
+ References
No definition available.
+ Details
Name:
aii_ReinsuranceContractsRecoveriesReceived
Namespace Prefix:
aii_
Data Type:
xbrli:monetaryItemType
Balance Type:
credit
Period Type:
duration
X
- References
No definition available.
+ Details
Name:
us-gaap_ReinsuranceDisclosuresAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration