Securities (Details 1) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Amortized Cost
Due in one year or less	$ 11,871
Due after one but within five years	47,557
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	61,647
Due after ten years	304,235
Total of securities having specified maturity period	425,310
TOTAL	1,068,032	$ 977,830
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost	642,722
Fair Value
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	11,982
Due after one but within five years	49,041
Due after five but within ten years	64,494
Due after ten years	322,588
Total of securities having specified maturities period	448,105
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value	648,988
Securities available-for-sale	$ 1,097,093	$ 1,020,744