Loans, Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Allowance for loan losses [Roll Forward]
Balance, beginning of year	$ 3,588	$ 3,437
Provision charged to expenses	336	191
Losses charged off	(640)	(310)
Recoveries	110	108
Balance, end of period	3,394	3,426
Individually evaluated for impairment	574	954
Collectively evaluated for impairment	2,405	2,472
Acquired credit impaired loans	415	0
Balance, end of period	3,394	3,426
Loans:
Individually evaluated for impairment	15,882	15,800
Collectively evaluated for impairment	655,077	532,953
Acquired credit impaired loans	20,760	7,561
Balance, end of period	691,719	556,314	574,354
Commercial and Industrial [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	175	320
Provision charged to expenses	146	(32)
Losses charged off	0	(119)
Recoveries	10	0
Balance, end of period	331	169
Individually evaluated for impairment	1	1
Collectively evaluated for impairment	66	168
Acquired credit impaired loans	264	0
Balance, end of period	331	169
Loans:
Individually evaluated for impairment	324	166
Collectively evaluated for impairment	36,057	32,755
Acquired credit impaired loans	2,501	356
Balance, end of period	38,882	33,277	29,306
Commercial Secured By Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	2,520	2,296
Provision charged to expenses	(81)	100
Losses charged off	(371)	(34)
Recoveries	0	11
Balance, end of period	2,068	2,373
Individually evaluated for impairment	437	684
Collectively evaluated for impairment	1,516	1,689
Acquired credit impaired loans	115	0
Balance, end of period	2,068	2,373
Loans:
Individually evaluated for impairment	13,707	13,858
Collectively evaluated for impairment	350,271	276,741
Acquired credit impaired loans	13,461	5,614
Balance, end of period	377,439	296,213	313,913
Residential Real Estate [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	826	712
Provision charged to expenses	239	118
Losses charged off	(175)	(39)
Recoveries	26	13
Balance, end of period	916	804
Individually evaluated for impairment	136	269
Collectively evaluated for impairment	744	535
Acquired credit impaired loans	36	0
Balance, end of period	916	804
Loans:
Individually evaluated for impairment	1,833	1,742
Collectively evaluated for impairment	238,484	206,817
Acquired credit impaired loans	3,930	1,591
Balance, end of period	244,247	210,150	215,842
Consumer [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	66	108
Provision charged to expenses	14	(6)
Losses charged off	(61)	(85)
Recoveries	50	61
Balance, end of period	69	78
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	69	78
Acquired credit impaired loans	0	0
Balance, end of period	69	78
Loans:
Individually evaluated for impairment	18	34
Collectively evaluated for impairment	19,858	13,402
Acquired credit impaired loans	215	0
Balance, end of period	20,091	13,436	12,730
Agricultural [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	0	0
Provision charged to expenses	8	0
Losses charged off	0	0
Recoveries	0	0
Balance, end of period	8	0
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	8	0
Acquired credit impaired loans	0	0
Balance, end of period	8	0
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	8,351	2,838
Acquired credit impaired loans	115	0
Balance, end of period	8,466	2,838	2,472
Other [Member]
Allowance for loan losses [Roll Forward]
Balance, beginning of year	1	1
Provision charged to expenses	10	11
Losses charged off	(33)	(33)
Recoveries	24	23
Balance, end of period	2	2
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	2	2
Acquired credit impaired loans	0	0
Balance, end of period	2	2
Loans:
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	2,056	400
Acquired credit impaired loans	538	0
Balance, end of period	$ 2,594	$ 400	$ 91