Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Amortized cost and fair value of the debt securities maturity
Amortized Cost, Within one year	$ 3,791
Amortized Cost, One to five years	10,360
Amortized Cost, Five to ten years	125,179
Amortized Cost, Beyond ten years	439,318
Amortized Cost, Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	586,662
Amortized Cost	1,165,310	$ 547,711
Fair Value, Within one year	3,820
Fair Value, One to five years	10,967
Fair Value, Five to ten years	125,944
Fair Value, Beyond ten years	458,689
Fair Value, Mortgage-backed, collateralized mortgage obligations and Small Business Administration securities	583,941
Fair Value, Total	$ 1,183,361	$ 575,600

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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