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Loans - Summary of Impaired Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | $ 16,200 | $ 16,600
Recorded investment | 21,501 | 22,329
Unpaid Principal Balance | 25,396 | 27,015
Impaired Financing Receivable, Related Allowance | (120) | (26)
Real Estate | Commercial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment | 17,408 | 18,091
Unpaid Principal Balance | 20,502 | 21,984
Impaired Financing Receivable, Related Allowance | (100) | 0
Real Estate | One-to-four family residential mortgage |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment | 2,658 | 2,685
Unpaid Principal Balance | 2,916 | 2,940
Impaired Financing Receivable, Related Allowance | (10) | (18)
Real Estate | Multifamily |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment | 1,308 | 1,419
Unpaid Principal Balance | 1,780 | 1,890
Impaired Financing Receivable, Related Allowance | 0 | 0
Real Estate | Home equity and lines of credit |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment | 59 | 61
Unpaid Principal Balance | 59 | 61
Impaired Financing Receivable, Related Allowance | (7) | (5)
Real Estate | Home equity and lines of credit | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With a Related Allowance Recorded | 33 | 33
Unpaid Principal Balance With a Related Allowance Recorded | 33 | 33
Impaired Financing Receivable, Related Allowance | (7) | (5)
Real Estate | Home equity and lines of credit | Pass |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 26 | 28
Unpaid Principal Balance With No Related Allowance Recorded | 26 | 28
Commercial and Industrial |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded investment | 68 | 73
Unpaid Principal Balance | 139 | 140
Impaired Financing Receivable, Related Allowance | (3) | (3)
Commercial and Industrial | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 48 | 52
Unpaid Principal Balance With No Related Allowance Recorded | 119 | 119
Commercial and Industrial | Special Mention |  |
Financing Receivable, Impaired [Line Items] |  |
Recorded Investment With a Related Allowance Recorded | 20 | 21
Unpaid Principal Balance With a Related Allowance Recorded | 20 | 21
Impaired Financing Receivable, Related Allowance | (3) | (3)
Less Than 35% LTV | Real Estate | Commercial | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 0 | 0
Unpaid Principal Balance With No Related Allowance Recorded | 139 | 139
Less Than 35% LTV | Real Estate | Multifamily | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 48 | 152
Unpaid Principal Balance With No Related Allowance Recorded | 48 | 152
Equal to or Greater than 35% LTV | Real Estate | Commercial | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 11,047 | 12,160
Recorded Investment With a Related Allowance Recorded | 517 | 0
Unpaid Principal Balance With No Related Allowance Recorded | 11,863 | 15,028
Unpaid Principal Balance With a Related Allowance Recorded | 1,770 | 0
Impaired Financing Receivable, Related Allowance | (100) | 0
Equal to or Greater than 35% LTV | Real Estate | Commercial | Pass |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 5,844 | 5,931
Unpaid Principal Balance With No Related Allowance Recorded | 6,730 | 6,817
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,225 | 1,229
Unpaid Principal Balance With No Related Allowance Recorded | 1,225 | 1,229
Equal to or Greater than 35% LTV | Real Estate | Multifamily | Pass |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 35 | 38
Unpaid Principal Balance With No Related Allowance Recorded | 507 | 509
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 238 | 241
Recorded Investment With a Related Allowance Recorded | 346 | 657
Unpaid Principal Balance With No Related Allowance Recorded | 238 | 241
Unpaid Principal Balance With a Related Allowance Recorded | 346 | 657
Impaired Financing Receivable, Related Allowance | (10) | (18)
Less Than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 1,822 | 1,532
Unpaid Principal Balance With No Related Allowance Recorded | 1,899 | 1,606
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Substandard |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 125 | 126
Unpaid Principal Balance With No Related Allowance Recorded | 276 | 278
Equal to or Greater than 60% LTV | Real Estate | One-to-four family residential mortgage | Pass |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Financing Receivable, with No Related Allowance, Recorded Investment | 127 | 129
Unpaid Principal Balance With No Related Allowance Recorded | $ 157 | $ 158

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