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Loans Receivable and Allowance for Loan Losses (Non-Accruing Loans) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 14,405	$ 16,396
Originated loans [Member] | Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	701	1,736
Originated loans [Member] | Commercial & Multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	7,962	8,721
Originated loans [Member] | Commercial Business [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	5,307	5,383
Originated loans [Member] | Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-accrual loans	$ 435	$ 556

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Amount of financing receivable on nonaccrual status.

+ 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 (a)
-URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447

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