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Investment Securities - Other (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) security	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) security	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) security
Investment Securities
Number of securities consisted in portfolio | security	417		417		308
Number of securities in loss position | security	157		157		10
Aggregate fair value of securities in loss position	$ 140,766		$ 140,766		$ 12,725
Loss position for 12 months or longer	2,948		2,948		1,229
Aggregate unrealized loss included in accumulated other comprehensive income (loss)	3,029		3,029		$ 325
Proceeds from sale of available for sale debt securities			5,420	$ 4,715
Gains realized on sales	119	$ 21	121	27
Recognized net securities losses	$ 126	$ 12	$ 140	$ 18

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