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Subordinated Debt (Details) - USD ($)
1 Months Ended 6 Months Ended 12 Months Ended
Aug. 31, 2014
Oct. 31, 2013
Dec. 31, 2021
Jun. 30, 2021
Subordinated debt     $ 15,294,000 $ 15,243,000
Prepaid Expenses and Other Current Assets        
Investment, face amount     505,000  
Investment, carrying value     460,000  
Trust Preferred Securities        
Subordinated debt     $ 7,200,000 7,200,000
Number of years after securities became redeemable     5 years  
Interest rate (as a percent)     2.97%  
Ozarks Legacy Community Financial, Inc.        
Interest rate (as a percent)     2.65%  
Floating rate   $ 3,100,000    
Ozarks Legacy Community Financial, Inc. | Reported Value Measurement        
Floating rate     $ 2,700,000 $ 2,700,000
Peoples Service Company, Inc.        
Interest rate (as a percent)     2.00%  
Floating rate $ 6,500,000      
Peoples Service Company, Inc. | Reported Value Measurement        
Floating rate     $ 5,400,000