Loans and Allowance for Loan Losses (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Analysis of changes in the allowance for loan losses
Balance at beginning of period	$ 5,202	$ 3,764	$ 3,825
Loan charge-offs	(723)	(594)	(1,022)
Recoveries	260	394	311
Net loan recoveries (charge-offs)	(463)	(200)	(711)
Provision charged to operations	455	1,638	650
Balance at end of period	5,194	5,202	3,764
Commercial
Analysis of changes in the allowance for loan losses
Balance at beginning of period	2,064	593	639
Loan charge-offs	(470)	(123)	(1)
Recoveries	134	274	167
Net loan recoveries (charge-offs)	(336)	151	166
Provision charged to operations	249	1,320	(212)
Balance at end of period	1,977	2,064	593
Commercial real estate
Analysis of changes in the allowance for loan losses
Balance at beginning of period	2,754	2,638	2,616
Loan charge-offs	(84)	(186)	(782)
Recoveries	10	3	11
Net loan recoveries (charge-offs)	(74)	(183)	(771)
Provision charged to operations	246	299	793
Balance at end of period	2,926	2,754	2,638
Residential real estate
Analysis of changes in the allowance for loan losses
Balance at beginning of period	229	356	343
Loan charge-offs	(45)	(93)	(81)
Recoveries	37	16	26
Net loan recoveries (charge-offs)	(8)	(77)	(55)
Provision charged to operations	(68)	(50)	68
Balance at end of period	153	229	356
Consumer | Home equity
Analysis of changes in the allowance for loan losses
Balance at beginning of period	60	88	123
Loan charge-offs		(48)	(12)
Recoveries	17	24	18
Net loan recoveries (charge-offs)	17	(24)	6
Provision charged to operations	(25)	(4)	(41)
Balance at end of period	52	60	88
Consumer | Other
Analysis of changes in the allowance for loan losses
Balance at beginning of period	95	89	104
Loan charge-offs	(124)	(144)	(146)
Recoveries	62	77	89
Net loan recoveries (charge-offs)	(62)	(67)	(57)
Provision charged to operations	53	73	42
Balance at end of period	$ 86	$ 95	$ 89