Fair Value of Assets and Liabilities (Details 6) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Investment securities available-for-sale, fair value	$ 136,372	$ 136,923
Impaired Loans
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Fair value input appraisal adjustments	(76.00%)
Fair value inputs liquidation expenses	(10.00%)
Impaired Loans | Appraisal Of Collateral
Significant unobservable inputs for assets and liabilities measured at fair value on a recurring and nonrecurring basis
Investment securities available-for-sale, fair value	$ 420