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Summary of Significant Accounting Policies (Details) $ in Thousands |  | 12 Months Ended |
--- | --- | --- | ---
Aug. 20, 2018 | Dec. 31, 2018 USD ($) store | Dec. 31, 2017 USD ($) | Jan. 01, 2019 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Number of full-service banking offices | store |  | 5 |  |
Stock split description |  | the Company effected a 1-for-5.5 reverse stock split, whereby each 5.5 shares of the Company's common stock were reclassified into one share of common stock. |  |
Reverse stock split ratio | 5.5 |  |  |
Cash exceeded federally insured limits |  | $ 59,200 |  |
Cash held, not federally insured |  | 56,800 |  |
Interest-bearing deposits in other financial institutions |  | 100 | $ 100 |
Minimum balance of loans individually evaluated for impairment |  | 250 |  |
Balance outstanding in joint ventures |  | 595 | 325 |
Income recognized on joint ventures |  | $ 69 | 20 |
Tax benefit greater than being realized on examination |  | 50.00% |  |
FRB regulatory reserve requirement |  | $ 3,502 | $ 718 |
Subsequent Event [Member] | ASU 2016-02 [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Operating lease, right-of-use asset |  |  |  | $ 2,400
Operating lease, liabilities |  |  |  | $ 2,400
Minimum [Member] | Buildings And Related Components [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 3 years |  |
Minimum [Member] | Furniture, Fixtures And Equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 2 years |  |
Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Home equity lines of credit combined with the balance of the prior mortgage liens |  | 89.90% |  |
Maximum [Member] | Buildings And Related Components [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 40 years |  |
Maximum [Member] | Furniture, Fixtures And Equipment [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Estimated useful life |  | 25 years |  |
Single-Family Residential [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 80.00% |  |
Multi-Family Residential [Member] | Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Fixed rates loans limit, period |  | 3 years |  |
Multi-Family Residential [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 85.00% |  |
Fixed rates loans limit, period |  | 5 years |  |
Real Estate Commercial [Member] | Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Fixed rates loans limit, period |  | 3 years |  |
Real Estate Commercial [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 85.00% |  |
Fixed rates loans limit, period |  | 5 years |  |
Construction [Member] | Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Lending amount up to the percentage of collateral |  | 80.00% |  |
Maturity of construction loans convert to permanent loans |  | 30 years |  |

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