Loans, Troubled Debt Restructurings Segregated by Class (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($) Loan	Sep. 30, 2015 USD ($) Loan	Sep. 30, 2016 USD ($) Loan	Sep. 30, 2015 USD ($) Loan	Dec. 31, 2015 USD ($) Loan
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2	6	45	18	34
Post-Modification Outstanding Balance	$ 152	$ 1,650	$ 13,070	$ 2,601	$ 11,127
Defaulted restructured loans, number of loans | Loan	2	2	4	5
Defaulted restructured loans, recorded investment	$ 1,460	$ 31	$ 2,328	$ 680
Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	152	1,485	12,210	2,146	8,519
Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0	0	0
Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	$ 0	$ 165	$ 860	$ 455	$ 2,608
Commercial [Member] | Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			5		3
Post-Modification Outstanding Balance			$ 1,408		$ 428
Commercial [Member] | Construction [Member] | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			1,408		428
Commercial [Member] | Construction [Member] | Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0		0
Commercial [Member] | Construction [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			$ 0		$ 0
Commercial [Member] | Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan	2	5	23	13	21
Post-Modification Outstanding Balance	$ 152	$ 511	$ 6,341	$ 1,118	$ 6,004
Defaulted restructured loans, number of loans | Loan	1	2	2	4
Defaulted restructured loans, recorded investment	$ 1,446	$ 31	$ 1,956	$ 390
Commercial [Member] | Real Estate [Member] | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	152	346	5,761	953	4,244
Commercial [Member] | Real Estate [Member] | Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	0	0	0	0	0
Commercial [Member] | Real Estate [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance	$ 0	$ 165	$ 580	$ 165	$ 1,760
Commercial [Member] | Other [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan		1	16	4	7
Post-Modification Outstanding Balance		$ 1,139	$ 5,041	$ 1,193	$ 3,847
Defaulted restructured loans, number of loans | Loan	1		2
Defaulted restructured loans, recorded investment	$ 14		$ 372
Commercial [Member] | Other [Member] | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance		1,139	5,041	1,193	3,847
Commercial [Member] | Other [Member] | Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance		0	0	0	0
Commercial [Member] | Other [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance		$ 0	$ 0	$ 0	$ 0
Residential [Member] | Construction [Member]
Financing Receivable, Modifications [Line Items]
Defaulted restructured loans, number of loans | Loan		0		1
Defaulted restructured loans, recorded investment		$ 0		$ 290
Residential [Member] | Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans | Loan			1	1	3
Post-Modification Outstanding Balance			$ 280	$ 290	$ 848
Residential [Member] | Real Estate [Member] | Term Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0	0	0
Residential [Member] | Real Estate [Member] | Rate Modification [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			0	0	0
Residential [Member] | Real Estate [Member] | Combination [Member]
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Balance			$ 280	$ 290	$ 848