Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Beginning balance at Dec. 31, 2021	$ 271,656		$ 586	$ 189,689	$ 78,700		$ 4,449	$ (1,768)
Increase (Decrease) in Stockholders' Equity
Net income	22,037				22,037
Total other comprehensive income (loss), net of taxes	(44,362)						(44,362)
Cash dividends	(8,264)				(8,264)
Share-based compensation plans:
Net common shares acquired and net treasury shares acquired, including compensation expense	(12,171)		(2)	(425)				(11,744)
Ending balance at Dec. 31, 2022	$ 228,896	$ (1,984)	584	189,264	92,473	$ (1,984)	(39,913)	(13,512)
Share-based compensation plans:
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2016-13 [Member]
Net income	$ 35,663				35,663
Total other comprehensive income (loss), net of taxes	11,437						11,437
Cash dividends	(8,485)				(8,485)
Net common shares acquired and net treasury shares acquired, including compensation expense	(471)		(1)	(237)				(233)
Ending balance at Dec. 31, 2023	265,056		583	189,027	117,667		(28,476)	(13,745)
Increase (Decrease) in Stockholders' Equity
Net income	22,050				22,050
Total other comprehensive income (loss), net of taxes	2,160						2,160
Cash dividends	(13,177)				(13,177)
Issuance of stock (8,532,038 common shares) to acquire Codorus Valley Bancorp, Inc.	233,427		444	232,983
Share-based compensation plans:
Net common shares acquired and net treasury shares acquired, including compensation expense	7,166			1,264				5,902
Ending balance at Dec. 31, 2024	$ 516,682		$ 1,027	$ 423,274	$ 126,540		$ (26,316)	$ (7,843)