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Fair Value - Financial Assets Accounted for at Fair Value (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate | $ 24 |  | $ 24 |  | $ 1,200
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 103,921 |  | 103,921 |  | 93,383
Real Estate Acquired Through Foreclosure Fair Value | 1 |  | 1 |  |
Real Estate Owned, Valuation Allowance, Valuation Increase | 1 | $ 227 | 27 | $ 301 |
Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 89,175 |  | 89,175 |  | 75,916
Equity Funds [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 499
Residential Mortgage Backed Securities [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 10,925 |  | 10,925 |  | 12,472
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 10,925 |  | 10,925 |  |
Collateralized Debt Obligations [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 3,821 |  | 3,821 |  | 4,486
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 3,821 |  | 3,821 |  |
SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 10
Nonrecurring [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 103,921 |  | 103,921 |  | 93,383
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 916
Nonrecurring [Member] | Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 89,175 |  | 89,175 |  | 75,916
Nonrecurring [Member] | Equity mutual fund [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 499
Nonrecurring [Member] | Mortgage-backed securities - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 10,925 |  | 10,925 |  | 12,472
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 3,821 |  | 3,821 |  | 4,486
Nonrecurring [Member] | SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 10
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 499
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage-backed securities - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Collateralized mortgage obligations - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 103,921 |  | 103,921 |  | 92,884
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 89,175 |  | 89,175 |  |
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Equity mutual fund [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Mortgage-backed securities - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 10,925 |  | 10,925 |  |
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | Collateralized mortgage obligations - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 3,821 |  | 3,821 |  |
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Real Estate Acquired Through Foreclosure Fair Value | 1 |  | 1 |  | 916
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Equity mutual fund [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Mortgage-backed securities - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | Collateralized mortgage obligations - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 0 |  | 0 |  | 0
Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] | SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value |  |  |  |  | 0
Nonresidential Real Estate [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate |  |  |  |  | 814
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 102
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
One to Four Family Residential Real Estate Loans [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate |  |  |  |  | 102
Commercial Real Estate [Member] | Nonrecurring [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 814
Commercial Real Estate [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
Commercial Real Estate [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value |  |  |  |  | 0
Land Loans [Member] | Nonrecurring [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value | 1 |  | 1 |  |
Land Loans [Member] | Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value | 0 |  | 0 |  |
Land Loans [Member] | Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value | 0 |  | 0 |  |
Land Loans [Member] | Nonrecurring [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real Estate Acquired Through Foreclosure Fair Value | $ 1 |  | $ 1 |  |
Sales Comparison Valuation Technique [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate |  |  |  |  | $ 916
Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Commercial Real Estate [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real estate owned, measurement input |  |  |  |  | 0.056
Impaired Loans [Member] | Sales Comparison Valuation Technique [Member] | Land Loans [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real estate owned, measurement input | 0.123 |  | 0.123 |  |
Measurement Input, Comparability Adjustment [Member] | Maximum [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real estate owned, measurement input |  |  |  |  | 0.1522
Measurement Input, Comparability Adjustment [Member] | Weighted Average [Member] | Real Estate Properties [Domain] | Nonresidential Real Estate [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Real estate owned, measurement input |  |  |  |  | 0.1100

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