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Fair Value Measurements - Schedule of Debt Securities Available-for-sale Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Debt Securities available for sale $ 22,380 $ 18,893
SBA Pool Securities [Member]    
Debt Securities available for sale 1,233 1,297
Collateralized Mortgage Obligations [Member]    
Debt Securities available for sale 392 485
Mortgage-backed Securities [Member]    
Debt Securities available for sale 11,097 12,026
Fair Value [Member]    
Debt Securities available for sale 22,380 18,893
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]    
Debt Securities available for sale
Significant Other Observable Inputs (Level 2) [Member]    
Debt Securities available for sale 22,380 18,893
Significant Unobservable Inputs (Level 3) [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | SBA Pool Securities [Member]    
Debt Securities available for sale 1,233 1,297
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Collateralized Mortgage Obligations [Member]    
Debt Securities available for sale 392 485
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Taxable Municipal Securities [Member]    
Debt Securities available for sale 9,658 5,085
Fair Value, Measurements, Recurring [Member] | Fair Value [Member] | Mortgage-backed Securities [Member]    
Debt Securities available for sale 11,097 12,026
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | SBA Pool Securities [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Collateralized Mortgage Obligations [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Taxable Municipal Securities [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] | Mortgage-backed Securities [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | SBA Pool Securities [Member]    
Debt Securities available for sale 1,233 1,297
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Collateralized Mortgage Obligations [Member]    
Debt Securities available for sale 392 485
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Taxable Municipal Securities [Member]    
Debt Securities available for sale 9,658 5,085
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Mortgage-backed Securities [Member]    
Debt Securities available for sale 11,097 12,026
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | SBA Pool Securities [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateralized Mortgage Obligations [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Taxable Municipal Securities [Member]    
Debt Securities available for sale
Fair Value, Measurements, Recurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed Securities [Member]    
Debt Securities available for sale