Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less	$ 7,881
Due after one but within five years	52,873
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	67,655
Due after ten years	265,761
Total of securities having specified maturity period	394,170
TOTAL	914,362	$ 907,575
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	520,192
Fair Value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	7,943
Due after one but within five years	54,507
Due after five but within ten years	71,408
Due after ten years	287,523
Total of securities having specified maturities period	421,381
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	534,858
Securities available-for-sale	$ 956,239	$ 926,717