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Loans Receivable - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Credit Quality Indicators
Total loans	$ 1,174,728	$ 1,331,194
Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		172
One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	55,750	70,371
One to Four Family Residential Real Estate Loans-Owner occupied [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	44,989	57,344
One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,761	13,027
Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	563,750	619,870
Multi Family Mortgage Loans excluding wholesale [Member] [Member]
Financing Receivable Credit Quality Indicators
Total loans	247,963	279,237
Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	315,787	340,633
Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	134,674	152,442
Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	24,853	39,574
Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	70,430	85,343
Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	50,431	62,489
Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	133,839	166,209
Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	138,790	133,185
Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	2,211	1,539
Nonaccrual [Member]
Financing Receivable Credit Quality Indicators
Total loans	800	1,517
Nonaccrual [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Nonaccrual [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	512	1,168
Nonaccrual [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	79
Nonaccrual [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	288	270
Nonaccrual [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Nonaccrual [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member]
Financing Receivable Credit Quality Indicators
Total loans	9,847	6,290
Special Mention [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Special Mention [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	36	495
Special Mention [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	30	0
Special Mention [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	162	281
Special Mention [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	4,810
Special Mention [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	8,346	0
Special Mention [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Special Mention [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	507	701
Special Mention [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	761	0
Special Mention [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	5	3
Substandard [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,053	1,028
Substandard [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		0
Substandard [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	533	328
Substandard [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	35	37
Substandard [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	206	216
Substandard [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	90	98
Substandard [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	342
Substandard [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	0	0
Substandard [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	136	0
Substandard [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	53	7
Pass [Member]
Financing Receivable Credit Quality Indicators
Total loans	1,163,028	1,322,359
Pass [Member] | Land loans [Member]
Financing Receivable Credit Quality Indicators
Total loans		172
Pass [Member] | One-to-four family residential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	43,908	55,353
Pass [Member] | One-to-four family residential real estate loans - non-owner occupied loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	10,696	12,911
Pass [Member] | Multi-family mortgage loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	247,757	279,021
Pass [Member] | Wholesale commercial lending [Member]
Financing Receivable Credit Quality Indicators
Total loans	315,787	340,633
Pass [Member] | Nonresidential real estate loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	134,134	151,793
Pass [Member] | Commercial loans - Secured [Member]
Financing Receivable Credit Quality Indicators
Total loans	24,853	34,764
Pass [Member] | Commercial loans - Unsecured [Member]
Financing Receivable Credit Quality Indicators
Total loans	62,084	85,001
Pass [Member] | Commercial Loans - Municipal loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	50,431	62,489
Pass [Member] | Commercial Leases - Investment Rated [Member]
Financing Receivable Credit Quality Indicators
Total loans	133,332	165,508
Pass [Member] | Commercial Leases - Below Investment Grade [Member]
Financing Receivable Credit Quality Indicators
Total loans	137,893	133,185
Pass [Member] | Consumer loans [Member]
Financing Receivable Credit Quality Indicators
Total loans	$ 2,153	$ 1,529

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Financing receivable credit quality indicators.

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No definition available.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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