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Note 13: Subordinated Notes (Details) - USD ($)
3 Months Ended 9 Months Ended
Aug. 08, 2016
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Debt Instrument, Interest Rate Terms The notes are due August 15, 2026, and have a fixed interest rate of 5.25% until August 15, 2021, at which time the rate becomes floating at a rate equal to three-month LIBOR plus 4.087%.        
Amortization of Debt Discount (Premium)   $ 186 $ 109 $ 428 $ 326
Subordinated Borrowing, Interest Rate   5.85%      
Senior Subordinated Notes          
Proceeds from Issuance of Senior Long-term Debt $ 73,500,000        
Payment of Financing and Stock Issuance Costs $ 1,500,000