Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less	$ 12,587
Due after one but within five years	46,094
Due after five but within ten years	71,063
Due after ten years	362,734
Total of securities having specified maturity period	492,478
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	750,282
TOTAL	1,242,760	$ 977,830
Fair Value
Due in one year or less	12,658
Due after one but within five years	47,490
Due after five but within ten years	74,923
Due after ten years	382,615
Total of securities having specified maturities period	517,686
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	753,134
Fair Value	$ 1,270,820	$ 1,020,744