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Loans Receivable - Nonaccrual Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Reserve For Uncollected Loan Interest | $ 40 | $ 38
Unpaid Principal Balance | 1,885 | 2,793
Recorded Investment | 1,440 | 1,510
Loans Past Due Over 90 Days, still accruing | 0 | 0
One-to-four family residential real estate loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Unpaid Principal Balance | 1,089 | 2,167
Recorded Investment | 812 | 1,162
Loans Past Due Over 90 Days, still accruing | 0 | 0
One-to-four family residential real estate loans - non-owner occupied loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Unpaid Principal Balance | 86 | 270
Recorded Investment | 32 | 78
Loans Past Due Over 90 Days, still accruing | 0 | 0
Wholesale Commercial Lending [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Unpaid Principal Balance |  | 356
Loans Past Due Over 90 Days, still accruing |  | 0
Nonresidential real estate loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Unpaid Principal Balance | 356 |
Recorded Investment | 242 | $ 270
Loans Past Due Over 90 Days, still accruing | 0 |
Commercial loans - Secured [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Unpaid Principal Balance | 354 |
Recorded Investment | 354 |
Loans Past Due Over 90 Days, still accruing | $ 0 |

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- Definition Financing Receivable, Nonaccrual + References No definition available. + Details
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Balance Type: | debit
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- Definition Reserve for uncollected loan interest. + References No definition available. + Details
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- Definition Recorded investment in financing receivables that are 90 days or more past due and still accruing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524 + Details
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- Definition Financing receivables that are current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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