Loans (Summary of Loan Modifications by Concession Type) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) loan	Dec. 31, 2015 USD ($) loan	Dec. 31, 2014 USD ($) loan
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	98	142	219
Pre- modification recorded investment	$ 20,819	$ 22,596	$ 30,112
Post- modification recorded investment	20,819	22,594	30,086
Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	15,269	15,206	26,452
Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	3,393	450	266
A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	43	0	334
Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	364	900	2,720
Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 1,750	$ 6,038	$ 314
Commercial Loan Portfolio
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	70	77	100
Pre- modification recorded investment	$ 19,712	$ 19,347	$ 25,928
Post- modification recorded investment	19,712	19,347	25,928
Commercial Loan Portfolio | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	14,526	12,640	23,442
Commercial Loan Portfolio | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	3,393	450	266
Commercial Loan Portfolio | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	43	0	334
Commercial Loan Portfolio | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	219	1,572
Commercial Loan Portfolio | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 1,750	$ 6,038	$ 314
Commercial Loan Portfolio | Commercial
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	54	53	53
Pre- modification recorded investment	$ 14,853	$ 11,446	$ 13,781
Post- modification recorded investment	14,853	11,446	13,781
Commercial Loan Portfolio | Commercial | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	11,533	6,031	12,657
Commercial Loan Portfolio | Commercial | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	1,527	0	112
Commercial Loan Portfolio | Commercial | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	43	0	111
Commercial Loan Portfolio | Commercial | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	117	901
Commercial Loan Portfolio | Commercial | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 1,750	$ 5,298	$ 0
Commercial Loan Portfolio | Commercial real estate
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	16	21	46
Pre- modification recorded investment	$ 4,859	$ 7,196	$ 12,075
Post- modification recorded investment	4,859	7,196	12,075
Commercial Loan Portfolio | Commercial real estate | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	2,993	5,904	10,713
Commercial Loan Portfolio | Commercial real estate | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	1,866	450	154
Commercial Loan Portfolio | Commercial real estate | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	223
Commercial Loan Portfolio | Commercial real estate | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	102	671
Commercial Loan Portfolio | Commercial real estate | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 0	$ 740	$ 314
Commercial Loan Portfolio | Real estate construction and land development
Financing Receivable, Modifications [Line Items]
Total number of loans | loan		3	1
Pre- modification recorded investment		$ 705	$ 72
Post- modification recorded investment		705	72
Commercial Loan Portfolio | Real estate construction and land development | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment		705	72
Commercial Loan Portfolio | Real estate construction and land development | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment		0	0
Commercial Loan Portfolio | Real estate construction and land development | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment		0	0
Commercial Loan Portfolio | Real estate construction and land development | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment		0	0
Commercial Loan Portfolio | Real estate construction and land development | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment		$ 0	$ 0
Consumer Loan Portfolio
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	28	65	119
Pre- modification recorded investment	$ 1,107	$ 3,249	$ 4,184
Post- modification recorded investment	1,107	3,247	4,158
Consumer Loan Portfolio | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	743	2,566	3,010
Consumer Loan Portfolio | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	364	681	1,148
Consumer Loan Portfolio | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 0	$ 0	$ 0
Consumer Loan Portfolio | Residential mortgage
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	4	20	36
Pre- modification recorded investment	$ 477	$ 1,881	$ 2,847
Post- modification recorded investment	477	1,881	2,823
Consumer Loan Portfolio | Residential mortgage | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	477	1,246	1,832
Consumer Loan Portfolio | Residential mortgage | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Residential mortgage | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Residential mortgage | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	635	991
Consumer Loan Portfolio | Residential mortgage | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 0	$ 0	$ 0
Consumer Loan Portfolio | Consumer installment
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	14	19	52
Pre- modification recorded investment	$ 87	$ 210	$ 572
Post- modification recorded investment	87	210	572
Consumer Loan Portfolio | Consumer installment | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	87	210	572
Consumer Loan Portfolio | Consumer installment | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Consumer installment | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Consumer installment | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Consumer installment | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 0	$ 0	$ 0
Consumer Loan Portfolio | Home equity
Financing Receivable, Modifications [Line Items]
Total number of loans | loan	10	26	31
Pre- modification recorded investment	$ 543	$ 1,158	$ 765
Post- modification recorded investment	543	1,156	763
Consumer Loan Portfolio | Home equity | Principal deferral
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	179	1,110	606
Consumer Loan Portfolio | Home equity | Principal reduction
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Home equity | A/B Note Restructure
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	0	0	0
Consumer Loan Portfolio | Home equity | Interest rate
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	364	46	157
Consumer Loan Portfolio | Home equity | Forbearance agreement
Financing Receivable, Modifications [Line Items]
Post- modification recorded investment	$ 0	$ 0	$ 0