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Commitments and Contingencies (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | $ 58,249 | $ 55,830
Loans and Leases Receivable, Commitments, Variable Rates | 79,190 | 66,190
Loans And Leases Receivable Commitments | 137,439 | 122,020
Government [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 0 | 0
Loans and Leases Receivable, Commitments, Variable Rates | 0 | 0
Loans And Leases Receivable Commitments | 0 | 0
Consumer Loan [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 16,469 | 15,332
Loans and Leases Receivable, Commitments, Variable Rates | 0 | 0
Loans And Leases Receivable Commitments | 16,469 | 15,332
Commercial Real Estate [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 1,351 | 1,426
Loans and Leases Receivable, Commitments, Variable Rates | 6,866 | 5,973
Loans And Leases Receivable Commitments | 8,217 | 7,399
Commercial business [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 1,103 | 1,088
Loans and Leases Receivable, Commitments, Variable Rates | 41,381 | 41,474
Loans And Leases Receivable Commitments | 42,484 | 42,562
Residential Real Estate [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 70 | 82
Loans and Leases Receivable, Commitments, Variable Rates | 7,678 | 7,683
Loans And Leases Receivable Commitments | 7,748 | 7,765
Home Equity Loan [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 31,008 | 25,896
Loans and Leases Receivable, Commitments, Variable Rates | 1,838 | 2,839
Loans And Leases Receivable Commitments | 32,846 | 28,735
Multifamily [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 174 | 6,168
Loans and Leases Receivable, Commitments, Variable Rates | 322 | 192
Loans And Leases Receivable Commitments | 496 | 6,360
Construction and Land Development [Member] |  |
Commitments and Contingencies [Line Items] |  |
Loans and Leases Receivable, Commitments, Fixed Rates | 8,074 | 5,838
Loans and Leases Receivable, Commitments, Variable Rates | 21,105 | 8,029
Loans And Leases Receivable Commitments | $ 29,179 | $ 13,867

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