Securities Continuous Unrealized Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 12,810	$ 171,001
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	758	12,179
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	359,436	230,596
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	64,692	42,474
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	372,246	401,597
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	65,450	54,653
US Government and Government Agencies and Authorities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	55,931
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	0	4,161
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	122,750	69,686
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	17,152	11,665
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	122,750	125,617
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	17,152	15,826
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	84	70,293
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	3	5,842
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	192,373	147,867
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	39,578	27,304
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	192,457	218,160
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	39,581	33,146
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	12,726	44,777
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	755	2,176
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	44,313	13,043
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	7,962	3,505
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	57,039	57,820
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	$ 8,717	$ 5,681