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Accumulated Other Comprehensive Income (Loss)
6 Months Ended
Jun. 30, 2026
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss)
 
Changes in accumulated other comprehensive income ("AOCI") (loss) by component, including amounts reclassified to other comprehensive income ("OCI") (loss) and the related line item in the Consolidated Statements of Operations where net income is presented, are as follows:
Three months endedThree months ended
June 30, 2026June 30, 2025
(in thousands)Before TaxIncome TaxNetBefore TaxIncome TaxNet
Investment securities:
AOCI (loss), beginning of period$(14,358)$(3,015)$(11,343)$(15,128)$(3,178)$(11,950)
OCI before reclassifications71 15 56 6,774 1,423 5,351 
Realized investment losses963 202 761 431 91 340 
Impairment losses348 73 275 721 151 570 
OCI 1,382 290 1,092 7,926 1,665 6,261 
AOCI (loss), end of period$(12,976)$(2,725)$(10,251)$(7,202)$(1,513)$(5,689)
Pension and other postretirement plans:
AOCI (loss), beginning of period$(66,968)$(14,064)$(52,904)$(38,511)$(8,087)$(30,424)
Amortization of prior service costs458 96 362 422 88 334 
Amortization of net actuarial gain(68)(14)(54)(655)(138)(517)
OCI (loss)390 82 308 (233)(50)(183)
AOCI (loss), end of period$(66,578)$(13,982)$(52,596)$(38,744)$(8,137)$(30,607)
Total
AOCI (loss), beginning of period$(81,326)$(17,079)$(64,247)$(53,639)$(11,265)$(42,374)
Investment securities1,382 290 1,092 7,926 1,665 6,261 
Pension and other postretirement plans390 82 308 (233)(50)(183)
OCI 1,772 372 1,400 7,693 1,615 6,078 
AOCI (loss), end of period$(79,554)$(16,707)$(62,847)$(45,946)$(9,650)$(36,296)
Six months endedSix months ended
June 30, 2026June 30, 2025
(in thousands)Before TaxIncome TaxNetBefore TaxIncome TaxNet
Investment securities:
AOCI (loss), beginning of period$1,508 $316 $1,192 $(22,442)$(4,714)$(17,728)
OCI (loss) before reclassifications
(15,911)(3,341)(12,570)13,461 2,827 10,634 
Realized investment losses814 171 643 693 146 547 
Impairment losses613 129 484 1,086 228 858 
OCI (loss)
(14,484)(3,041)(11,443)15,240 3,201 12,039 
AOCI (loss), end of period$(12,976)$(2,725)$(10,251)$(7,202)$(1,513)$(5,689)
Pension and other postretirement plans:
AOCI (loss), beginning of period
$(67,359)$(14,146)$(53,213)$(37,802)$(7,939)$(29,863)
Amortization of prior service costs916 192 724 844 177 667 
Amortization of net actuarial gain(135)(28)(107)(1,309)(275)(1,034)
Settlement gain— — — (477)(100)(377)
OCI (loss)781 164 617 (942)(198)(744)
AOCI (loss), end of period
$(66,578)$(13,982)$(52,596)$(38,744)$(8,137)$(30,607)
Total
AOCI (loss), beginning of period$(65,851)$(13,830)$(52,021)$(60,244)$(12,653)$(47,591)
Investment securities(14,484)(3,041)(11,443)15,240 3,201 12,039 
Pension and other postretirement plans781 164 617 (942)(198)(744)
OCI (loss)
(13,703)(2,877)(10,826)14,298 3,003 11,295 
AOCI (loss), end of period$(79,554)$(16,707)$(62,847)$(45,946)$(9,650)$(36,296)