Other Comprehensive Income (Loss) - Schedule of Unrealized Gains and Losses on Postretirement Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of year	$ 252,493	$ 243,079	$ 228,923
Balance at end of year	283,143	252,493	243,079
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss)
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of year	287	303	273
Change in unamortized net actuarial gain	(59)	(21)	39
Related deferred taxes	12	5	(9)
Net change	(47)	(16)	30
Balance at end of year	$ 240	$ 287	$ 303