v3.26.1
Reserve for Losses and Loss Adjustment Expenses (Tables)
3 Months Ended
Mar. 31, 2026
Insurance [Abstract]  
Schedule of Reconciliation of Beginning and Ending Reserve Balances for Losses and Loss Adjustment Expenses
The following table provides a reconciliation of the beginning and ending reserve balances for losses and loss adjustment expenses, net of reinsurance, to the gross amounts reported in the condensed consolidated balance sheets. Reinsurance recoverables on unpaid losses and loss adjustment expenses are presented gross of an allowance for credit losses on reinsurance balances of $1.7 million at March 31, 2026, $1.6 million at December 31, 2025, $1.5 million at March 31, 2025 and $1.2 million at December 31, 2024.
 Three Months Ended
March 31,
 20262025
 (in thousands)
Reserve for losses and loss adjustment expenses net of reinsurance recoverables at beginning of period$1,071,699 $1,086,278 
Add: Incurred losses and loss adjustment expenses net of reinsurance:  
Current year94,136 101,584 
Prior years - retroactive reinsurance14,189 (1,928)
Prior years - excluding retroactive reinsurance(165)(131)
Total incurred losses and loss and adjustment expenses108,160 99,525 
Deduct: Loss and loss adjustment expense payments net of reinsurance: 
Current year900 1,731 
Prior years93,151 90,239 
Total loss and loss adjustment expense payments94,051 91,970 
Deduct: Change in deferred reinsurance gain - retroactive reinsurance14,189 (1,928)
Reserve for losses and loss adjustment expenses net of reinsurance recoverables at end of period1,071,619 1,095,761 
Add: Reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period2,016,229 1,985,779 
Reserve for losses and loss adjustment expenses gross of reinsurance recoverables on unpaid losses and loss adjustment expenses at end of period$3,087,848 $3,081,540 
Schedule of Retroactive Reinsurance
The following tables summarize the retroactive reinsurance accounting for the Commercial Auto LPT, the E&S ADC, and the E&S Top Up ADC for the three months ended March 31, 2026 and 2025, respectively.
Three Months Ended
March 31,
20262025
(in thousands)
Commercial Auto LPT
Deferred retroactive reinsurance gain at beginning of period$2,927 $9,222 
Adverse prior year development ceded on subject business— 144 
Retroactive reinsurance benefits under the recovery method(591)(2,072)
Deferred retroactive reinsurance gain at end of period$2,336 $7,294 
E&S ADC
Deferred retroactive reinsurance gain at beginning of period$83,793 $48,748 
Adverse prior year development ceded on subject business— — 
Retroactive reinsurance benefits under the recovery method— — 
Deferred retroactive reinsurance gain at end of period$83,793 $48,748 
E&S Top Up ADC
Deferred retroactive reinsurance gain at beginning of period$— $— 
Adverse prior year development ceded on subject business14,780 — 
Retroactive reinsurance benefits under the recovery method— — 
Deferred retroactive reinsurance gain at end of period$14,780 $— 
Total
Deferred retroactive reinsurance gain at beginning of period$86,720 $57,970 
Adverse prior year development ceded on subject business14,780 144 
Retroactive reinsurance benefits under the recovery method(591)(2,072)
Deferred retroactive reinsurance gain at end of period$100,909 $56,042