Stockholders' Equity and Earnings per Common Share, Amounts Reclassified Out of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Available-for-sale securities [Abstract]
Realized gains (losses) on sales of securities	$ 264	$ 314
Tax effect	55	66
Total	$ 209	$ 248

Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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