Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 17,600
Due after one but within five years	64,741
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	73,343
Due after ten years	217,529
Total of securities having specified maturity period	373,213
TOTAL	918,591	$ 793,084
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	545,378
Fair Value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	17,633
Due after one but within five years	65,565
Due after five but within ten years	75,416
Due after ten years	232,132
Total of securities having specified maturities period	390,746
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	549,198
Securities available-for-sale	$ 939,944	$ 784,916