Loans, Past Due (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Recorded investment of past due [Abstract]
Total Past Due	$ 8,268	$ 5,151
Current	574,741	548,954
Total Loans	583,009	554,105
90 Days or Greater and Accruing	668	836
Financing receivables on nonaccrual status [Abstract]
Total Past Due And Non-accrual	5,594	2,243
Current And Non-accrual	725	4,356
Financing receivable nonaccrual status	6,319	6,599
Financing receivables on accrual status [Abstract]
Total Past Due And Still Accruing	2,674	2,908
Current And Still Accruing	574,016	544,598
Total Financing Receivables And Still Accruing	$ 576,690	547,506
Minimum [Member]
Financing receivables on nonaccrual status [Abstract]
Period of past due after which loans considered as non accrual	90 days
30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	$ 1,848	1,479
Financing receivables on nonaccrual status [Abstract]
Total Past Due And Non-accrual	319	48
Financing receivables on accrual status [Abstract]
Total Past Due And Still Accruing	1,529	1,431
60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	681	822
Financing receivables on nonaccrual status [Abstract]
Total Past Due And Non-accrual	204	181
Financing receivables on accrual status [Abstract]
Total Past Due And Still Accruing	477	641
90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	5,739	2,850
Financing receivables on nonaccrual status [Abstract]
Total Past Due And Non-accrual	5,071	2,014
Financing receivables on accrual status [Abstract]
Total Past Due And Still Accruing	668	836
Real Estate Loans [Member] | Mortgages [Member]
Recorded investment of past due [Abstract]
Total Past Due	1,184	1,223
Current	117,211	121,635
Total Loans	118,395	122,858
90 Days or Greater and Accruing	303	214
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	729	676
Real Estate Loans [Member] | Mortgages [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	388	318
Real Estate Loans [Member] | Mortgages [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	133	230
Real Estate Loans [Member] | Mortgages [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	663	675
Real Estate Loans [Member] | Home Equity [Member]
Recorded investment of past due [Abstract]
Total Past Due	700	801
Current	59,185	61,779
Total Loans	59,885	62,580
90 Days or Greater and Accruing	106	132
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	65	152
Real Estate Loans [Member] | Home Equity [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	521	442
Real Estate Loans [Member] | Home Equity [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	21	99
Real Estate Loans [Member] | Home Equity [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	158	260
Real Estate Loans [Member] | Commercial [Member]
Recorded investment of past due [Abstract]
Total Past Due	4,570	1,760
Current	193,205	189,185
Total Loans	197,775	190,945
90 Days or Greater and Accruing	60	310
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	4,441	5,010
Real Estate Loans [Member] | Commercial [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	302	97
Real Estate Loans [Member] | Commercial [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	130	231
Real Estate Loans [Member] | Commercial [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	4,138	1,432
Real Estate Loans [Member] | Agricultural [Member]
Recorded investment of past due [Abstract]
Total Past Due	208	0
Current	35,948	24,639
Total Loans	36,156	24,639
90 Days or Greater and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
Real Estate Loans [Member] | Agricultural [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	38	0
Real Estate Loans [Member] | Agricultural [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	170	0
Real Estate Loans [Member] | Agricultural [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Real Estate Loans [Member] | Construction [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Current	10,159	6,353
Total Loans	10,159	6,353
90 Days or Greater and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
Real Estate Loans [Member] | Construction [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Real Estate Loans [Member] | Construction [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Real Estate Loans [Member] | Construction [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Consumer [Member]
Recorded investment of past due [Abstract]
Total Past Due	94	130
Current	8,379	8,367
Total Loans	8,473	8,497
90 Days or Greater and Accruing	0	6
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	52	47
Consumer [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	41	119
Consumer [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	29	4
Consumer [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	24	7
Other Commercial Loans [Member]
Recorded investment of past due [Abstract]
Total Past Due	1,314	1,237
Current	50,881	46,214
Total Loans	52,195	47,451
90 Days or Greater and Accruing	199	174
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	1,032	714
Other Commercial Loans [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	528	503
Other Commercial Loans [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	30	258
Other Commercial Loans [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	756	476
Other Agricultural Loans [Member]
Recorded investment of past due [Abstract]
Total Past Due	198	0
Current	12,319	11,065
Total Loans	12,517	11,065
90 Days or Greater and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
Other Agricultural Loans [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	30	0
Other Agricultural Loans [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	168	0
Other Agricultural Loans [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
State and Political Subdivision Loans [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
Current	87,454	79,717
Total Loans	87,454	79,717
90 Days or Greater and Accruing	0	0
Financing receivables on nonaccrual status [Abstract]
Financing receivable nonaccrual status	0	0
State and Political Subdivision Loans [Member] | 30 to 59 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
State and Political Subdivision Loans [Member] | 60 to 89 Days Past Due [Member]
Recorded investment of past due [Abstract]
Total Past Due	0	0
State and Political Subdivision Loans [Member] | 90 Days Or Greater [Member]
Recorded investment of past due [Abstract]
Total Past Due	$ 0	$ 0