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Consolidated Statements of Changes in Stockholders' Equity Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Consolidated Statements of Changes in Stockholders' Equity [Abstract]      
Unrealized holding gain on marketable securities-taxes     $ 28
Cash dividends declared per common share $ 0.60 $ 0.15 $ 0.57
Payments to Acquire Businesses, Gross $ 0 $ 0 $ 37,173