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Securities Continuous Unrealized Loss (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 67,601 $ 31,889
Available-for-sale Securities Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss 204 447
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 26,470 157,875
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Accumulated Loss 164 5,183
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 94,071 189,764
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Losses 368 5,630
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 24,734 4,724
Available-for-sale Securities Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss 97 28
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 4,993 44,307
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Accumulated Loss 1 1,172
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 29,727 49,031
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Losses 98 1,200
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 40,126 12,325
Available-for-sale Securities Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss 98 238
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 21,477 99,184
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Accumulated Loss 163 3,500
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 61,603 111,509
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Losses 261 3,738
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 2,741 14,840
Available-for-sale Securities Continuous Unrealized Loss Position Less Than 12 Months Accumulated Loss 9 181
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 14,384
Available-for-sale Securities Continuous Unrealized Loss Position 12 Months Or Longer Accumulated Loss 0 511
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2,741 29,224
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Losses $ 9 $ 692