Employee Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Defined Contribution Plan [Line Items]
Matched percentage by employer	50.00%
Maximum employee percentage of deferred salary matched by employer	6.00%
Non-elective safe-harbor contribution received each December 31st	3.00%
Employer contributions	$ 1,000	$ 1,000	$ 990
Maximum age benefit could be reduced or forfeited	65 years
Supplemental income benefit liability	$ 49	56
Supplemental income benefit expense	$ 29	$ 29	$ 29
Minimum [Member]
Defined Contribution Plan [Line Items]
Non-elective safe-harbor contribution received each December 31st	1.00%
Maximum [Member]
Defined Contribution Plan [Line Items]
Non-elective safe-harbor contribution received each December 31st	10.00%