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Securities (Details 1) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized cost and fair value of the debt securities maturity
Amortized Cost, Within one year	$ 3,006
Amortized Cost, One to five years	5,430
Amortized Cost, Five to ten years	44,780
Amortized Cost, Beyond ten years	415,022
Amortized Cost, Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	322,056
Amortized Cost	790,294	$ 547,711
Fair Value, Within one year	3,044
Fair Value, One to five years	5,685
Fair Value, Five to ten years	46,080
Fair Value, Beyond ten years	426,410
Fair Value, Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	321,647
Fair Value, Total	$ 802,866	$ 575,600

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