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Securities Continuous Unrealized Loss (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 10,415 $ 67,601
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses 171 204
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 26,470
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses 0 164
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 10,415 94,071
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses 171 368
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 5,218 24,734
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses 111 97
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 4,993
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses 0 1
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 5,218 29,727
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses 111 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 0 40,126
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses 0 98
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 21,477
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses 0 163
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 0 61,603
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses 0 261
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 5,197 2,741
Available-for-sale Securities Continuous Unrealized Loss Position Less than 12 Months Aggregate Losses 60 9
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 0
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months or Longer Aggregate Losses 0 0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 5,197 2,741
Available-for-sale Securities Continuous Unrealized Loss Position Aggregate Losses $ 60 $ 9