Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 30,838	$ 33,784
Chargeoffs	188	143
Recoveries	6	1
Provision for Loan Losses (Credit)	(457)	1,512
Allowance for loan losses, ending balance	30,199	35,154
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,158	1,441
Chargeoffs	54	74
Recoveries	4
Provision for Loan Losses (Credit)	(61)	(103)
Allowance for loan losses, ending balance	1,047	1,264
Commercial Mortgages [Member] \| Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,851	6,423
Provision for Loan Losses (Credit)	584	346
Allowance for loan losses, ending balance	6,435	6,769
Commercial Mortgages [Member] \| Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	3,783	4,734
Provision for Loan Losses (Credit)	(266)	46
Allowance for loan losses, ending balance	3,517	4,780
Commercial Mortgages [Member] \| Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	743	1,076
Provision for Loan Losses (Credit)	(58)	(158)
Allowance for loan losses, ending balance	685	918
Residential Mortgages [Member] \| Closed-end [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	18,844	19,347
Chargeoffs	134	20
Recoveries	1	1
Provision for Loan Losses (Credit)	(640)	1,338
Allowance for loan losses, ending balance	18,071	20,666
Residential Mortgages [Member] \| Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	410	689
Chargeoffs		49
Provision for Loan Losses (Credit)	(8)	42
Allowance for loan losses, ending balance	402	682
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	49	74
Recoveries	1
Provision for Loan Losses (Credit)	(8)	1
Allowance for loan losses, ending balance	$ 42	$ 75

A valuation allowance for financing receivables that are expected to be uncollectible.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

+ Details

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

+ Details

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