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+ References

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Fair value of asset after deduction of liability.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of accumulated impairment loss for asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Fair Value Measurement (Narrative) (Details)	Sep. 30, 2024 USD ($) subsidiary	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)
Credit Derivatives [Line Items]
Accumulated impairment loss	$ (205,225,000)
Number of proassurance's insurance subsidiaries \| subsidiary	2
Fair value of funded deferred compensation assets	$ 34,400,000	$ 32,300,000
Workers' Compensation Insurance
Credit Derivatives [Line Items]
Accumulated impairment loss	(44,110,000)		$ (44,100,000)
Fair Value
Credit Derivatives [Line Items]
Deferred compensation liabilities	34,100,000	32,000,000.0
Fair Value, Nonrecurring
Credit Derivatives [Line Items]
Fair value, net asset (liability)	$ 0	$ 0