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Loans Loans - Internal Credit Assessment (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	$ 2,488,489	$ 2,086,429
Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	240	839
Consumer Portfolio
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	661,854	558,022
Consumer Portfolio | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	661,614	557,183
Consumer Portfolio | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	240	839
Consumer Portfolio | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	362,574	299,935
Consumer Portfolio | Residential mortgage | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	362,395	299,211
Consumer Portfolio | Residential mortgage | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	179	724
Consumer Portfolio | Home equity
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	28,713	30,554
Consumer Portfolio | Home equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	28,713	30,471
Consumer Portfolio | Home equity | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	0	83
Consumer Portfolio | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	270,567	227,533
Consumer Portfolio | Other consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	270,506	227,501
Consumer Portfolio | Other consumer | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	$ 61	$ 32

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+ References

No definition available.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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