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Fair Value - Financial Assets Accounted for at Fair Value (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate | $ 0 |  | $ 0 |  | $ 1,200
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 112,452 |  | 112,452 |  | 93,383
Real Estate Owned, Valuation Allowance, Valuation Increase | 1 | $ 54 | 26 | $ 74 |
Certificates of deposit [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 96,603 |  | 96,603 |  | 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 | 11,811 |  | 11,811 |  | 12,472
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 11,811 |  | 11,811 |  |
Collateralized Debt Obligations [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 4,031 |  | 4,031 |  | 4,486
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 4,031 |  | 4,031 |  |
SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 7 |  | 7 |  | 10
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 7 |  | 7 |  |
Nonrecurring [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 112,452 |  | 112,452 |  | 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 | 96,603 |  | 96,603 |  | 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 | 11,811 |  | 11,811 |  | 12,472
Nonrecurring [Member] | Collateralized mortgage obligations - residential [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 4,031 |  | 4,031 |  | 4,486
Nonrecurring [Member] | SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 7 |  | 7 |  | 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 |  | 0 |  | 0
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Total Fair value | 112,452 |  | 112,452 |  | 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 | 96,603 |  | 96,603 |  |
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 | 11,811 |  | 11,811 |  |
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 | 4,031 |  | 4,031 |  |
Nonrecurring [Member] | Significant Observable Inputs (Level 2) [Member] | SBA-guaranteed loan participation certificates [Member] |  |  |  |  |
Schedule of Company's financial instruments measured at fair values |  |  |  |  |
Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value | 7 |  | 7 |  |
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 |  |  |  |  | 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 |  | $ 0 |  | 0
One to Four Family Residential Real Estate Loans [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate |  |  |  |  | 102
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
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
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
Measurement Input, Comparability Adjustment [Member] | Nonresidential Real Estate [Member] |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Other Real Estate |  |  |  |  | $ 814
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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