Loans Receivable and Allowance for Loan Losses - Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended
Mar. 31, 2019 USD ($) loan	Mar. 31, 2018 USD ($) loan
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	1	2
Pre-modification Recorded Investment	$ 4,095	$ 672
Post-modification Recorded Investment	$ 4,095	$ 672
Real estate loans \| One-to-four family
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	0	1
Pre-modification Recorded Investment	$ 0	$ 588
Post-modification Recorded Investment	$ 0	$ 588
Commercial business loans \| Commercial Real Estate
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	1	0
Pre-modification Recorded Investment	$ 4,095	$ 0
Post-modification Recorded Investment	$ 4,095	$ 0
Consumer loans \| Home equity loans and advances
Financing Receivable, Modifications [Line Items]
No. of Loans \| loan	0	1
Pre-modification Recorded Investment	$ 0	$ 84
Post-modification Recorded Investment	$ 0	$ 84

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No definition available.

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

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Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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