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Fair Value Disclosures - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value $ 215,634 $ 178,348
Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 215,634 178,348
Derivative financial instruments 6,174 3,446
US Government-sponsored Enterprises Debt Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 30,530 19,000
Municipal securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 91,989 64,391
Other Debt Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 25,118 3,470
Mortgage-backed securities (GSEs) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 67,997 91,487
Fair Value, Recurring [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 215,634 178,348
Derivative financial instruments 6,174 3,446
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Derivative financial instruments 0 0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 215,634 178,348
Derivative financial instruments 6,174 3,446
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Derivative financial instruments 0 0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 30,530 19,000
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 30,530 19,000
Fair Value, Recurring [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Municipal securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 91,989 64,391
Fair Value, Recurring [Member] | Municipal securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Municipal securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 91,989 64,391
Fair Value, Recurring [Member] | Municipal securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Other Debt Securities [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 25,118 3,470
Fair Value, Recurring [Member] | Other Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Other Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 25,118 3,470
Fair Value, Recurring [Member] | Other Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 67,997 91,487
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 0 0
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value 67,997 91,487
Fair Value, Recurring [Member] | Mortgage-backed securities (GSEs) [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Securities available-for-sale, at fair value $ 0 $ 0