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Subordinated Debt (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Aug. 31, 2014
Oct. 31, 2013
Mar. 31, 2004
Sep. 30, 2021
Jun. 30, 2021
Subordinated debt       $ 15,268 $ 15,243
Prepaid Expenses and Other Current Assets          
Investment, face amount       505,000  
Investment, carrying value       459,000  
Trust Preferred Securities          
Subordinated debt       $ 7,200 7,200
Redeemable term (in years)     5 years    
Interest rate (as a percent)       2.87%  
Ozarks Legacy Community Financial, Inc.          
Interest rate (as a percent)       2.57%  
Floating rate   $ 3,100      
Ozarks Legacy Community Financial, Inc. | Reported Value Measurement          
Floating rate       $ 2,700 2,700
Peoples Service Company, Inc.          
Interest rate (as a percent)       1.92%  
Floating rate $ 6,500        
Peoples Service Company, Inc. | Reported Value Measurement          
Floating rate       $ 5,300 $ 5,300