Securities Continuous Unrealized Loss (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 183,229	$ 59,849
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	2,906	242
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	27,916	0
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	706	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	211,145	59,849
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	3,612	242
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	50,658	15,416
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	1,051	98
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	15,002	0
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	441	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	65,660	15,416
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	1,492	98
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	122,322	41,488
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	1,678	133
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	10,810	0
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	162	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	133,132	41,488
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	1,840	133
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	10,249	2,945
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses	177	11
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,104	0
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses	103	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	12,353	2,945
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses	$ 280	$ 11