Comprehensive Income/(Loss) (Tables)

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

Schedule of Changes in Accumulated Other Comprehensive Income (Loss) by Component, Net of Tax

Changes in accumulated other comprehensive income (loss) by component, net of tax, were as follows for the periods indicated:

	Year Ended December 31, 2025
	Investment Securities  Available-for-Sale		Net Change in Fair Value of Cash Flow Hedges		Postretirement Benefits		Accumulated Other Comprehensive Income (Loss)
	(In Thousands)
Balance at December 31, 2024	$	(53,718)	$	(1,323)	$	2,159	$	(52,882)
Other comprehensive income (loss)	33,125		(20)		(1,620)		31,485
(Income) expense recognized in earnings	—		1,395		—		1,395
Balance at December 31, 2025	$	(20,593)	$	52	$	539	$	(20,002)

	Year Ended December 31, 2024
	Investment Securities  Available-for-Sale		Net Change in Fair Value of Cash Flow Hedges		Postretirement Benefits		Accumulated Other Comprehensive Income (Loss)
	(In Thousands)
Balance at December 31, 2023	$	(52,546)	$	(1,581)	$	1,329	$	(52,798)
Other comprehensive income (loss)	(1,172)		(2,744)		1,127		(2,789)
(Income) expense recognized in earnings	—		3,002		(297)		2,705
Balance at December 31, 2024	$	(53,718)	$	(1,323)	$	2,159	$	(52,882)

	Year Ended December 31, 2023
	Investment Securities  Available-for-Sale		Net Change in Fair Value of Cash Flow Hedges		Postretirement Benefits		Accumulated Other Comprehensive Income (Loss)
	(In Thousands)
Balance at December 31, 2022	$	(60,193)	$	(2,242)	$	488	$	(61,947)
Other comprehensive income (loss)	7,647		(2,026)		1,135		6,756
(Income) expense recognized in earnings	—		2,687		(294)		2,393
Balance at December 31, 2023	$	(52,546)	$	(1,581)	$	1,329	$	(52,798)