Loans (Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	$ 30,843	$ 27,524	$ 30,057	$ 27,256
Chargeoffs	6		12
Recoveries	6	14	10	29
Provision for loan losses	1,293	139	2,081	392
Allowance for loan losses, ending balance	32,136	27,677	32,136	27,677
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,527	1,112	1,408	928
Chargeoffs			6
Recoveries	4		7	4
Provision for loan losses	13	62	135	242
Allowance for loan losses, ending balance	1,544	1,174	1,544	1,174
Commercial Mortgages [Member] \| Multifamily Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	5,806	6,805	6,119	6,858
Provision for loan losses	115	(459)	(198)	(512)
Allowance for loan losses, ending balance	5,921	6,346	5,921	6,346
Commercial Mortgages [Member] \| Other Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	4,303	3,853	4,296	3,674
Provision for loan losses	371	(25)	378	154
Allowance for loan losses, ending balance	4,674	3,828	4,674	3,828
Commercial Mortgages [Member] \| Owner-occupied Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	998	1,093	959	1,047
Provision for loan losses	687	82	726	128
Allowance for loan losses, ending balance	1,685	1,175	1,685	1,175
Residential Mortgages [Member] \| Closed End Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	16,758	13,643	15,740	13,639
Recoveries	1		2	8
Provision for loan losses	276	505	1,293	501
Allowance for loan losses, ending balance	17,035	14,148	17,035	14,148
Residential Mortgages [Member] \| Revolving Home Equity [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	1,339	927	1,401	1,016
Recoveries		9		12
Provision for loan losses	(136)	(23)	(198)	(115)
Allowance for loan losses, ending balance	1,203	913	1,203	913
Consumer And Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses, beginning balance	112	91	134	94
Chargeoffs	6		6
Recoveries	1	5	1	5
Provision for loan losses	(33)	(3)	(55)	(6)
Allowance for loan losses, ending balance	$ 74	$ 93	$ 74	$ 93

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

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- 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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- 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://www.xbrl.org/2003/role/presentationRef
-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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.11)
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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