Allowance for Loan Losses and Reserve for Unfunded Lending Commitments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015		Sep. 30, 2014	Dec. 31, 2014		Sep. 30, 2015	Dec. 31, 2014
Allowance for Loan Losses
Balance, beginning of period			$ 12,427	[1]	$ 12,600	$ 12,600
Provision for loan losses	$ 0	$ 0	700		150	400
Charge-offs			(883)		(398)	(964)
Recoveries			367		268	391
Balance, end of period	12,611	12,620	12,611		12,620	12,427	[1]
Reserve for Unfunded Lending Commitments
Balance, beginning of period			163		210	210
Provision for (recovery of) loan losses			26		(55)	(47)
Charge-offs			0		0	0
Balance, end of period	189	155	189		155	163
Allowance for Loan Losses
Individually evaluated for impairment								$ 34	$ 165
Collectively evaluated for impairment								12,105	11,716
Loans acquired with deteriorated credit quality								472	546
Total	12,611	$ 12,620	12,427	[1]	12,600	12,600		12,611	12,427	[1]
Loans
Individually evaluated for impairment								4,349	4,537
Collectively evaluated for impairment								941,065	821,455
Loans acquired with deteriorated credit quality								35,570	14,933
Total Loans								980,984	840,925	[1]
Commercial [Member]
Allowance for Loan Losses
Balance, beginning of period			1,818		1,810	1,810
Provision for loan losses			383			58
Charge-offs			(164)			(101)
Recoveries			26			51
Balance, end of period	2,063		2,063			1,818
Allowance for Loan Losses
Individually evaluated for impairment								0	0
Collectively evaluated for impairment								2,056	1,815
Loans acquired with deteriorated credit quality								7	3
Total	2,063		1,818		1,810	1,810		2,063	1,818
Loans
Individually evaluated for impairment								107	7
Collectively evaluated for impairment								163,346	126,774
Loans acquired with deteriorated credit quality								572	200
Total Loans								164,025	126,981
Commercial Real Estate [Member]
Allowance for Loan Losses
Balance, beginning of period			6,814		6,819	6,819
Provision for loan losses			386			439
Charge-offs			(486)			(510)
Recoveries			114			66
Balance, end of period	6,828		6,828			6,814
Allowance for Loan Losses
Individually evaluated for impairment								8	161
Collectively evaluated for impairment								6,603	6,400
Loans acquired with deteriorated credit quality								217	253
Total	6,828		6,814		6,819	6,819		6,828	6,814
Loans
Individually evaluated for impairment								2,019	3,651
Collectively evaluated for impairment								474,196	429,660
Loans acquired with deteriorated credit quality								16,881	9,024
Total Loans								493,096	442,335
Residential Real Estate [Member]
Allowance for Loan Losses
Balance, beginning of period			3,715		3,690	3,690
Provision for loan losses			(131)			92
Charge-offs			(58)			(258)
Recoveries			122			191
Balance, end of period	3,648		3,648			3,715
Allowance for Loan Losses
Individually evaluated for impairment								26	1
Collectively evaluated for impairment								3,386	3,424
Loans acquired with deteriorated credit quality								236	290
Total	3,648		3,715		3,690	3,690		3,648	3,715
Loans
Individually evaluated for impairment								2,208	863
Collectively evaluated for impairment								297,674	259,796
Loans acquired with deteriorated credit quality								17,782	5,709
Total Loans								317,664	266,368
Consumer [Member]
Allowance for Loan Losses
Balance, beginning of period			80		99	99
Provision for loan losses			62			(7)
Charge-offs			(175)			(95)
Recoveries			105			83
Balance, end of period	72		72			80
Allowance for Loan Losses
Individually evaluated for impairment								0	3
Collectively evaluated for impairment								60	77
Loans acquired with deteriorated credit quality								12	0
Total	72		80		99	99		72	80
Loans
Individually evaluated for impairment								15	16
Collectively evaluated for impairment								5,849	5,225
Loans acquired with deteriorated credit quality								335	0
Total Loans								6,199	5,241
Unallocated [Member]
Allowance for Loan Losses
Balance, beginning of period			0		182	182
Provision for loan losses			0			(182)
Charge-offs			0			0
Recoveries			0			0
Balance, end of period	0		0			0
Allowance for Loan Losses
Individually evaluated for impairment								0	0
Collectively evaluated for impairment								0	0
Loans acquired with deteriorated credit quality								0	0
Total	$ 0		$ 0		$ 182	$ 182		0	0
Loans
Individually evaluated for impairment								0	0
Collectively evaluated for impairment								0	0
Loans acquired with deteriorated credit quality								0	0
Total Loans								$ 0	$ 0

[1] Derived from audited consolidated financial statements.