Loans (Troubled Debt Restructurings) (Narrative) (Details) $ in Thousands	12 Months Ended
Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan	Dec. 31, 2016 USD ($)
Financing Receivable, Impaired [Line Items]
Guarantee percentage of SBA Loan	90.00%
Average recorded investment	$ 3,167	$ 1,460	$ 4,410
Impaired financing receivable, related allowance	$ 667	$ 332
Number of loans modified as a TDR \| loan	0	0
Financing receivable, accrual status	$ 1,291,593	$ 1,162,366
Financing receivable, nonaccrual status	6,873	2,994
Troubled Debt Restructuring
Financing Receivable, Impaired [Line Items]
Average recorded investment	745	786
Impaired financing receivable, related allowance	$ 97	$ 138

Guarantee percentage of SBA Loan

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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.

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
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- Definition

Financing receivables that are current.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ 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
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5111-111524

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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