Investment Securities - Other (Details)	12 Months Ended
Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($) security	Dec. 31, 2018 USD ($)
Investment Securities
Number of securities consisted in portfolio \| security	308	322
Number of securities in loss position \| security	10	128
Aggregate fair value of securities in loss position	$ 12,725,000	$ 81,018,000
Loss position for 12 months or longer	1,229,000	52,658,000
Aggregate unrealized loss included in accumulated other comprehensive income (loss)	325,000	798,000
Proceeds from sale of available for sale debt securities	5,845,000	21,503,000	$ 77,168,000
Gains realized on sales	49,000	6,000	253,000
Unrealized net losses related to equity securities	61,000
Recognized net securities losses	$ 61,000	$ (40,000)	$ 255,000

Number of securities in available for sale portfolio.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of realized gain on 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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