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Reportable Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Segment Reporting Information [Line Items]        
Dividend and Interest Income $ 11,195 $ 11,218    
Interest expense 462 651    
Net interest income 10,733 10,567    
Provision for (release of) loan losses (125) 177 $ 335  
Noninterest income 3,374 3,296    
Noninterest expense 9,954 9,540    
Net income before taxes 4,278 4,146    
Income tax provision (benefit) 789 891    
Net income 3,489 3,255    
Total Assets as of December 31, 2020 1,652,279 1,492,494 1,584,508 $ 1,395,382
Consolidation, Eliminations [Member]        
Segment Reporting Information [Line Items]        
Dividend and Interest Income (1,081) (1,003)    
Interest expense    
Net interest income (1,081) (1,003)    
Provision for (release of) loan losses    
Noninterest income    
Noninterest expense    
Net income before taxes (1,081) (1,003)    
Income tax provision (benefit)    
Net income (1,081) (1,003)    
Total Assets as of December 31, 2020 (152,189) (139,522) (152,169) (139,568)
Mortgage Banking [Member]        
Segment Reporting Information [Line Items]        
Dividend and Interest Income 202 353    
Interest expense    
Net interest income 202 353    
Provision for (release of) loan losses    
Noninterest income 839 990    
Noninterest expense 1,016 1,175    
Net income before taxes 25 168    
Income tax provision (benefit)    
Net income 25 168    
Total Assets as of December 31, 2020 20,300 35,340 16,798 59,372
Commercial And Retail Banking [Member]        
Segment Reporting Information [Line Items]        
Dividend and Interest Income 10,990 10,861    
Interest expense 358 546    
Net interest income 10,632 10,315    
Provision for (release of) loan losses (125) 177    
Noninterest income 1,337 1,429    
Noninterest expense 7,991 7,624    
Net income before taxes 4,103 3,943    
Income tax provision (benefit) 849 934    
Net income 3,254 3,009    
Total Assets as of December 31, 2020 1,631,193 1,456,436 1,566,949 1,335,320
Investment Advisory And Non Deposit [Member]        
Segment Reporting Information [Line Items]        
Dividend and Interest Income    
Interest expense    
Net interest income    
Provision for (release of) loan losses    
Noninterest income 1,198 877    
Noninterest expense 763 584    
Net income before taxes 435 293    
Income tax provision (benefit)    
Net income 435 293    
Total Assets as of December 31, 2020 2 2 2 2
Corporate Segment [Member]        
Segment Reporting Information [Line Items]        
Dividend and Interest Income 1,084 1,007    
Interest expense 104 105    
Net interest income 980 902    
Provision for (release of) loan losses    
Noninterest income    
Noninterest expense 184 157    
Net income before taxes 796 745    
Income tax provision (benefit) (60) (43)    
Net income 856 788    
Total Assets as of December 31, 2020 $ 152,973 $ 140,238 $ 152,928 $ 140,256