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Loans - Credit Quality (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans by risk rating
Total Loans	$ 1,133,715	$ 1,159,332	$ 1,101,256
Commercial
Loans by risk rating
Total Loans	141,315	127,196	104,805
Real estate - commercial
Loans by risk rating
Total Loans	605,721	600,629	560,233
Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	125,504	132,665
Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	171,948	169,315
Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	167,643	158,235
Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	92,387	88,477
Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	34,352	37,780
Real estate - commercial | Farm
Loans by risk rating
Total Loans	13,887	14,157
Real estate - construction
Loans by risk rating
Total Loans	19,806	44,795	29,351
Real estate - construction | Homebuilder
Loans by risk rating
Total Loans	2,604	3,204
Real estate - construction | Land
Loans by risk rating
Total Loans	1,137	1,658
Real estate - construction | Commercial speculative
Loans by risk rating
Total Loans	2,200	13,431
Real estate - construction | All other
Loans by risk rating
Total Loans	13,865	26,502
Real estate - residential
Loans by risk rating
Total Loans	351,007	370,191	390,201
Real estate - residential | Investor
Loans by risk rating
Total Loans	126,684	137,215
Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	118,792	116,428
Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	105,531	116,548
Consumer
Loans by risk rating
Total Loans	4,216	3,504	2,760
All other
Loans by risk rating
Total Loans	11,650	13,017	$ 13,906
Pass
Loans by risk rating
Total Loans	1,101,886	1,090,065
Pass | Commercial
Loans by risk rating
Total Loans	136,078	118,845
Pass | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	123,827	124,936
Pass | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	171,185	154,225
Pass | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	163,956	148,212
Pass | Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	88,468	78,957
Pass | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	30,432	36,779
Pass | Real estate - commercial | Farm
Loans by risk rating
Total Loans	12,615	14,157
Pass | Real estate - construction | Homebuilder
Loans by risk rating
Total Loans	2,604	3,204
Pass | Real estate - construction | Land
Loans by risk rating
Total Loans	1,137	1,658
Pass | Real estate - construction | Commercial speculative
Loans by risk rating
Total Loans	2,117	9,947
Pass | Real estate - construction | All other
Loans by risk rating
Total Loans	13,865	25,941
Pass | Real estate - residential | Investor
Loans by risk rating
Total Loans	125,548	134,952
Pass | Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	111,713	109,085
Pass | Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	102,476	112,647
Pass | Consumer
Loans by risk rating
Total Loans	4,215	3,503
Pass | All other
Loans by risk rating
Total Loans	11,650	13,017
Special Mention
Loans by risk rating
Total Loans	6,606	28,329
Special Mention | Commercial
Loans by risk rating
Total Loans	3,208	3,948
Special Mention | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans		253
Special Mention | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans		11,607
Special Mention | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	1,908	3,235
Special Mention | Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans		8,097
Special Mention | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	1,490	1,001
Special Mention | Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans		188
Substandard
Loans by risk rating
Total Loans	25,223	40,938
Substandard | Commercial
Loans by risk rating
Total Loans	2,029	4,403
Substandard | Real estate - commercial | Owner occupied general purpose
Loans by risk rating
Total Loans	1,677	7,476
Substandard | Real estate - commercial | Owner occupied special purpose
Loans by risk rating
Total Loans	763	3,483
Substandard | Real estate - commercial | Non-owner occupied general purpose
Loans by risk rating
Total Loans	1,779	6,788
Substandard | Real estate - commercial | Non-owner occupied special purpose
Loans by risk rating
Total Loans	3,919	1,423
Substandard | Real estate - commercial | Retail properties
Loans by risk rating
Total Loans	2,430
Substandard | Real estate - commercial | Farm
Loans by risk rating
Total Loans	1,272
Substandard | Real estate - construction | Commercial speculative
Loans by risk rating
Total Loans	83	3,484
Substandard | Real estate - construction | All other
Loans by risk rating
Total Loans		561
Substandard | Real estate - residential | Investor
Loans by risk rating
Total Loans	1,136	2,263
Substandard | Real estate - residential | Owner occupied
Loans by risk rating
Total Loans	7,079	7,343
Substandard | Real estate - residential | Revolving and junior liens
Loans by risk rating
Total Loans	3,055	3,713
Substandard | Consumer
Loans by risk rating
Total Loans	$ 1	$ 1

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524

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