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Interim Condensed Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)
$ in Thousands
Total
Common Stock
Shares to be Issued for Deferred Compensation Obligations
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Additional Paid-in Capital
Beginning balances at Dec. 31, 2019 $ 210,182 $ 141,069 $ 5,043 $ 62,099 $ 1,971  
Beginning balances, shares at Dec. 31, 2019   7,910,804        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 18,012     11,608 6,404  
Issuance of common stock 3,274 $ 3,274        
Issuance of common stock, shares   184,144        
Common stock transferred from the Rabbi Trust to satisfy deferred compensation obligations 0 $ (1,273) (1,273)      
Share based payment awards under equity compensation plan 334   334      
Common stock purchased for deferred compensation obligations (1,252) (1,252)        
Common stock repurchased pursuant to publicly announced repurchase plan (1,619) $ (1,619)        
Common stock repurchased pursuant to publicly announced repurchase plan, shares   (87,047)        
Cash dividends (6,386)     (6,386)    
Ending balances at Sep. 30, 2020 222,545 $ 142,745 4,104 67,321 8,375  
Ending balances, shares at Sep. 30, 2020   8,007,901        
Beginning balances at Dec. 31, 2020 218,588 $ 142,247 4,183 64,460 7,698  
Beginning balances, shares at Dec. 31, 2020   7,997,247        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Comprehensive income (loss) 11,394     14,705 (3,311)  
Issuance of common stock 1,196 $ 1,196        
Issuance of common stock, shares   52,523        
Common stock transferred from the Rabbi Trust to satisfy deferred compensation obligations 0 $ (71) (71)      
Share based payment awards under equity compensation plan 343   343      
Common stock purchased for deferred compensation obligations (869) (869)        
Common stock repurchased pursuant to publicly announced repurchase plan (2,699) $ (2,699)        
Common stock repurchased pursuant to publicly announced repurchase plan, shares   (123,160)        
Cash dividends (6,369)     (6,369)    
Ending balances at Sep. 30, 2021 221,642 $ 140,004 $ 4,455 $ 72,796 $ 4,387  
Ending balances, shares at Sep. 30, 2021   7,926,610        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
APIC, Share-based Payment Arrangement, Other, Increase for Cost Recognition $ 58         $ 58