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Loans and Allowance for Loan Losses - Troubled Debt Restructurings That Are Performing (Details) $ in Thousands	3 Months Ended	12 Months Ended	15 Months Ended
	Mar. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($) contract	Mar. 31, 2021 USD ($) contract
Number of contracts			0
Performing Financial Instruments [Member]
Number of contracts	23	25
Amortized Cost | $	$ 15,278	$ 15,911	$ 15,278
Multi-Family Residential [Member] | Performing Financial Instruments [Member]
Number of contracts	6	6
Amortized Cost | $	$ 1,686	$ 1,700	1,686
Commercial Real Estate | Performing Financial Instruments [Member]
Number of contracts	1	1
Amortized Cost | $	$ 7,584	$ 7,702	7,584
One-To-Four Family - Mixed Used Property [Member] | Performing Financial Instruments [Member]
Number of contracts	5	5
Amortized Cost | $	$ 1,720	$ 1,731	1,720
One-To-Four Family - Residential [Member] | Performing Financial Instruments [Member]
Number of contracts	3	3
Amortized Cost | $	$ 501	$ 507	501
Taxi Medallion Portfolio Segment [Member] | Performing Financial Instruments [Member]
Number of contracts		2
Amortized Cost | $		$ 440
Commercial Business and Other [Member] | Performing Financial Instruments [Member]
Number of contracts	8	8
Amortized Cost | $	$ 3,787	$ 3,831	$ 3,787

X

- Definition

The amount of amortized cost of financing receivables modified as troubled debt restructuring.

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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