Loans (Details 4) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Loans by risk rating
Total Loans	$ 1,132,747	$ 1,101,256	$ 1,102,703
Investor
Loans by risk rating
Total Loans	132,731
Commercial
Loans by risk rating
Total Loans	115,474	104,805	98,036
Real estate - commercial
Loans by risk rating
Total Loans	599,796		563,061
Real estate - commercial \| Owner occupied general purpose
Loans by risk rating
Total Loans	130,347	121,934
Real estate - commercial \| Owner occupied special purpose
Loans by risk rating
Total Loans	169,485	172,459
Real estate - commercial \| Non-owner occupied general purpose
Loans by risk rating
Total Loans	155,936	138,257
Real estate - commercial \| Non-owner occupied special purpose
Loans by risk rating
Total Loans	88,350	73,986
Real estate - commercial \| Retail properties
Loans by risk rating
Total Loans	39,628	37,178
Real estate - commercial \| Farm
Loans by risk rating
Total Loans	16,050	16,419
Real estate - construction
Loans by risk rating
Total Loans	32,265		34,964
Real estate - construction \| Homebuilder
Loans by risk rating
Total Loans	3,408	3,683
Real estate - construction \| Land
Loans by risk rating
Total Loans	2,419	4,645
Real estate - construction \| Commercial speculative
Loans by risk rating
Total Loans	17,150	13,148
Real estate - construction \| All other
Loans by risk rating
Total Loans	9,288	7,875
Real estate - residential
Loans by risk rating
Total Loans	368,592		386,504
Real estate - residential \| Investor
Loans by risk rating
Total Loans	132,731	148,293
Real estate - residential \| Owner occupied
Loans by risk rating
Total Loans	116,176	116,960
Real estate - residential \| Revolving and junior liens
Loans by risk rating
Total Loans	119,685	124,948
Consumer
Loans by risk rating
Total Loans	3,064	2,760	2,793
All other
Loans by risk rating
Total Loans	13,556	13,906	17,345
Pass
Loans by risk rating
Total Loans	1,062,693	996,251
Pass \| Commercial
Loans by risk rating
Total Loans	106,100	96,371
Pass \| Real estate - commercial \| Owner occupied general purpose
Loans by risk rating
Total Loans	121,431	105,683
Pass \| Real estate - commercial \| Owner occupied special purpose
Loans by risk rating
Total Loans	162,233	162,586
Pass \| Real estate - commercial \| Non-owner occupied general purpose
Loans by risk rating
Total Loans	145,381	122,844
Pass \| Real estate - commercial \| Non-owner occupied special purpose
Loans by risk rating
Total Loans	78,080	59,674
Pass \| Real estate - commercial \| Retail properties
Loans by risk rating
Total Loans	35,221	30,059
Pass \| Real estate - commercial \| Farm
Loans by risk rating
Total Loans	16,050	16,419
Pass \| Real estate - construction \| Homebuilder
Loans by risk rating
Total Loans	3,408	1,745
Pass \| Real estate - construction \| Land
Loans by risk rating
Total Loans	2,210	4,436
Pass \| Real estate - construction \| Commercial speculative
Loans by risk rating
Total Loans	13,627	7,674
Pass \| Real estate - construction \| All other
Loans by risk rating
Total Loans	8,690	7,109
Pass \| Real estate - residential \| Investor
Loans by risk rating
Total Loans	127,109	135,136
Pass \| Real estate - residential \| Owner occupied
Loans by risk rating
Total Loans	110,335	109,261
Pass \| Real estate - residential \| Revolving and junior liens
Loans by risk rating
Total Loans	116,199	120,589
Pass \| Consumer
Loans by risk rating
Total Loans	3,063	2,759
Pass \| All other
Loans by risk rating
Total Loans	13,556	13,906
Special Mention
Loans by risk rating
Total Loans	31,527	42,782
Special Mention \| Commercial
Loans by risk rating
Total Loans	9,062	7,953
Special Mention \| Real estate - commercial \| Owner occupied general purpose
Loans by risk rating
Total Loans	5,632	9,048
Special Mention \| Real estate - commercial \| Owner occupied special purpose
Loans by risk rating
Total Loans	3,270	1,968
Special Mention \| Real estate - commercial \| Non-owner occupied general purpose
Loans by risk rating
Total Loans	1,739	1,826
Special Mention \| Real estate - commercial \| Non-owner occupied special purpose
Loans by risk rating
Total Loans	9,730	9,840
Special Mention \| Real estate - commercial \| Retail properties
Loans by risk rating
Total Loans	1,395	2,989
Special Mention \| Real estate - construction \| Homebuilder
Loans by risk rating
Total Loans		1,770
Special Mention \| Real estate - construction \| Commercial speculative
Loans by risk rating
Total Loans		3,561
Special Mention \| Real estate - construction \| All other
Loans by risk rating
Total Loans		32
Special Mention \| Real estate - residential \| Investor
Loans by risk rating
Total Loans	310	3,407
Special Mention \| Real estate - residential \| Revolving and junior liens
Loans by risk rating
Total Loans	389	388
Substandard
Loans by risk rating
Total Loans	38,527	62,223
Substandard \| Commercial
Loans by risk rating
Total Loans	312	481
Substandard \| Real estate - commercial \| Owner occupied general purpose
Loans by risk rating
Total Loans	3,284	7,203
Substandard \| Real estate - commercial \| Owner occupied special purpose
Loans by risk rating
Total Loans	3,982	7,905
Substandard \| Real estate - commercial \| Non-owner occupied general purpose
Loans by risk rating
Total Loans	8,816	13,587
Substandard \| Real estate - commercial \| Non-owner occupied special purpose
Loans by risk rating
Total Loans	540	4,472
Substandard \| Real estate - commercial \| Retail properties
Loans by risk rating
Total Loans	3,012	4,130
Substandard \| Real estate - construction \| Homebuilder
Loans by risk rating
Total Loans		168
Substandard \| Real estate - construction \| Land
Loans by risk rating
Total Loans	209	209
Substandard \| Real estate - construction \| Commercial speculative
Loans by risk rating
Total Loans	3,523	1,913
Substandard \| Real estate - construction \| All other
Loans by risk rating
Total Loans	598	734
Substandard \| Real estate - residential \| Investor
Loans by risk rating
Total Loans	5,312	9,750
Substandard \| Real estate - residential \| Owner occupied
Loans by risk rating
Total Loans	5,841	7,699
Substandard \| Real estate - residential \| Revolving and junior liens
Loans by risk rating
Total Loans	3,097	3,971
Substandard \| Consumer
Loans by risk rating
Total Loans	$ 1	$ 1