Loans Loans - Internal Credit Assessment (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	$ 1,195,801	$ 949,038
Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	1,133	167
Consumer Portfolio
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	401,896	366,150
Consumer Portfolio | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	400,763	365,983
Consumer Portfolio | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	1,133	167
Consumer Portfolio | Residential mortgage
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	200,889	214,559
Consumer Portfolio | Residential mortgage | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	199,864	214,456
Consumer Portfolio | Residential mortgage | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	1,025	103
Consumer Portfolio | Home equity
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	37,849	43,279
Consumer Portfolio | Home equity | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	37,849	43,279
Consumer Portfolio | Home equity | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	0	0
Consumer Portfolio | Other consumer
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	163,158	108,312
Consumer Portfolio | Other consumer | Performing
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	163,050	108,248
Consumer Portfolio | Other consumer | Nonaccrual
Financing Receivable, Recorded Investment [Line Items]
Total Loans Receivable	$ 108	$ 64