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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The carrying value as of the balance sheet date of the estimated valuation allowance to reduce gross premiums receivable to net realizable value.

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Amount of writeoff of premium receivable, charged against allowance for credit loss.

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The carrying amount as of the balance sheet date due the entity from (a) agents and insureds, (b) uncollected premiums and (c) others, net of the allowance for doubtful accounts.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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COMMITMENTS AND CONTINGENCIES - Reinsurance and Premiums (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) broker	Dec. 31, 2023 USD ($) broker	Dec. 31, 2022 USD ($) broker
Concentration Risk [Line Items]
Allowance for estimated uncollectible premium balances receivable	$ 17,339	$ 11,997	$ 9,521
Premiums receivable, bad debt expense charges	3,000	2,000	$ 0
Premiums receivable	$ 3,169,355	$ 3,067,554
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| Ceded Credit Risk, Secured
Concentration Risk [Line Items]
Concentration risk, percentage of total	17.00%	14.00%
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| AM Best, A- Rating Or Higher
Concentration Risk [Line Items]
Concentration risk, percentage of total	81.00%	83.00%
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| AM Best, A- Rating Or Lower
Concentration Risk [Line Items]
Concentration risk, percentage of total	2.00%	3.00%
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| Reinsurer 1
Concentration Risk [Line Items]
Concentration risk, percentage of total	12.00%	14.00%
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| Reinsurer 2
Concentration Risk [Line Items]
Concentration risk, percentage of total	7.00%	9.00%
Reinsurance Recoverable On Unpaid And Paid Losses \| Reinsurer Concentration \| Reinsurer 3
Concentration Risk [Line Items]
Concentration risk, percentage of total	5.00%	4.00%
Gross Premiums Written \| Customer Concentration
Concentration Risk [Line Items]
Concentration risk, number of brokers exceeding threshold \| broker	3	3	3
Gross Premiums Written \| Customer Concentration \| Three Brokers
Concentration Risk [Line Items]
Concentration risk, percentage of total	38.00%	38.00%	43.00%
Gross Premiums Written \| Customer Concentration \| Marsh & McLennan Companies Inc.
Concentration Risk [Line Items]
Concentration risk, percentage of total	14.00%	14.00%	17.00%
Gross Premiums Written \| Customer Concentration \| Aon plc
Concentration Risk [Line Items]
Concentration risk, percentage of total	14.00%	15.00%	17.00%
Gross Premiums Written \| Customer Concentration \| Arthur J. Gallagher & Co.
Concentration Risk [Line Items]
Concentration risk, percentage of total	10.00%	9.00%	9.00%