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Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Other Comprehensive Income (Loss) Other Comprehensive Income (Loss)
The following table summarizes activity in the unrealized gain or loss on AFS securities included in OCI for the years ended December 31, 2024, 2023 and 2022.
For the years ended December 31,202420232022
Balance at beginning of year$(39,575,000)$(44,718,000)$(1,718,000)
Unrealized (losses) gains arising during the year(3,919,000)6,510,000 (54,424,000)
Reclassification of realized gains during the year— — (7,000)
Related deferred taxes823,000 (1,367,000)11,431,000 
Net change(3,096,000)5,143,000 (43,000,000)
Balance at end of year$(42,671,000)$(39,575,000)$(44,718,000)
The reclassification of realized gains is included in the net securities gains line of the consolidated statements of income and comprehensive income and the tax effect is included in the income tax expense line of the same statement.

The following table summarizes activity in the unrealized loss on securities transferred from AFS to HTM included in OCI for the years ended December 31, 2024, 2023, and 2022.
For the years ended December 31,202420232022
Balance at beginning of year$(56,000)$(64,000)$(87,000)
Amortization of net unrealized gains 11,000 10,000 29,000 
Related deferred taxes(2,000)(2,000)(6,000)
Net change9,000 8,000 23,000 
Balance at end of year$(47,000)$(56,000)$(64,000)

The following table represents the effect of the Company's derivative financial instruments included in OCI for the years ended December 31, 2024, 2023, and 2022.
For the years ended December 31,
202420232022
Balance at beginning of year$300,000 $544,000 $— 
Unrealized (losses) gains on cash flow hedging derivatives arising during the year(181,000)(309,000)689,000 
Related deferred taxes38,000 65,000 (145,000)
Net change(143,000)(244,000)544,000 
Balance at end of year$157,000 $300,000 $544,000 
The following table summarizes activity in the unrealized gain or loss on postretirement benefits included in OCI for the years ended December 31, 2024, 2023, and 2022:
For the years ended December 31,202420232022
Unrecognized postretirement benefits  at beginning of year$303,000 $273,000 $105,000 
Change in unamortized net actuarial gain (21,000)39,000 212,000 
Related deferred taxes5,000 (9,000)(44,000)
Net change(16,000)30,000 168,000 
Unrecognized postretirement benefits at end of year$287,000 $303,000 $273,000 

The reclassification of accumulated losses is a component of net periodic benefit cost (see Note 12) and the income tax effect is included in the income tax expense line of the consolidated statements of income and comprehensive income.