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Employee Benefit Plans, Other Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Supplemental Executive Retirement Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Obligation included in other liabilities $ 1,516   $ 1,516   $ 1,460
Cost recognized 28 $ 31 56 $ 61  
Salary Continuation Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Obligation included in other liabilities 720   720   720
Cost recognized 14 $ 16 27 $ 32  
Continuation of Life Insurance Plan [Member]          
Defined Benefit Plan Disclosure [Line Items]          
Obligation included in other liabilities $ 574   $ 574   $ 569