Allowance For Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Allowance for loan losses:
Beginning balance	$ 15,705	$ 14,541	$ 16,361	$ 14,151	$ 14,151
Charge-offs	(681)	(19)	(3,254)	(1,487)	(1,489)
Recoveries	18	353	712	1,084	1,326
Provision	220	(1)	1,443	1,126	2,373
Ending balance	15,262	14,874	15,262	14,874	16,361
Collectively evaluated for impairment	13,957	11,514	13,957	11,514	11,852
Individually evaluated for impairment	1,137	3,188	1,137	3,188	4,335
Purchased credit impaired	168	172	168	172	174
Total allowance for loan losses	15,262	14,874	15,262	14,874	16,361
Loans receivable:
Collectively evaluated for impairment	1,489,416	1,240,976	1,489,416	1,240,976	1,336,485
Individually evaluated for impairment	8,630	21,936	8,630	21,936	15,432
Purchased credit impaired	6,952	7,647	6,952	7,647	7,498
Total loans held for investment	1,504,998	1,270,559	1,504,998	1,270,559	1,359,415
Commercial [Member]
Loans receivable:
Total loans held for investment	1,397,482		1,397,482		1,245,329
Commercial & Industrial [Member]
Allowance for loan losses:
Beginning balance	9,993	8,204	10,196	9,109	9,109
Charge-offs	(679)	(17)	(1,967)	(916)	(916)
Recoveries	10	252	65	890	1,044
Provision	(1,283)	329	(253)	(315)	959
Ending balance	8,041	8,768	8,041	8,768	10,196
Collectively evaluated for impairment	7,006	7,099	7,006	7,099	7,272
Individually evaluated for impairment	1,035	1,669	1,035	1,669	2,924
Total allowance for loan losses	8,041	8,768	8,041	8,768	10,196
Loans receivable:
Collectively evaluated for impairment	722,756	622,699	722,756	622,699	672,831
Individually evaluated for impairment	2,109	12,304	2,109	12,304	7,564
Purchased credit impaired	718	948	718	948	895
Total loans held for investment	725,583	635,951	725,583	635,951	681,290
Owner occupied commercial real estate [Member]
Allowance for loan losses:
Beginning balance	791	1,010	874	763	763
Recoveries		83	14	136	222
Provision	63	(309)	(34)	(115)	(111)
Ending balance	854	784	854	784	874
Collectively evaluated for impairment	852	781	852	781	872
Purchased credit impaired	2	3	2	3	2
Total allowance for loan losses	854	784	854	784	874
Loans receivable:
Collectively evaluated for impairment	131,485	145,834	131,485	145,834	155,306
Individually evaluated for impairment	177		177
Purchased credit impaired	1,278	1,687	1,278	1,687	1,655
Total loans held for investment	132,940	147,521	132,940	147,521	156,961
Commerical real estate [Member]
Allowance for loan losses:
Beginning balance	2,609	2,232	2,216	2,380	2,380
Charge-offs				(333)	(333)
Recoveries			1	21	21
Provision	251	(218)	643	(54)	148
Ending balance	2,860	2,014	2,860	2,014	2,216
Collectively evaluated for impairment	2,709	1,866	2,709	1,866	2,021
Individually evaluated for impairment					45
Purchased credit impaired	151	148	151	148	150
Total allowance for loan losses	2,860	2,014	2,860	2,014	2,216
Loans receivable:
Collectively evaluated for impairment	300,939	230,622	300,939	230,622	258,993
Individually evaluated for impairment	3,047	2,700	3,047	2,700	3,342
Purchased credit impaired	4,714	4,731	4,714	4,731	4,676
Total loans held for investment	308,700	238,053	308,700	238,053	267,011
Construction, land & land development [Member]
Allowance for loan losses:
Beginning balance	1,475	1,121	1,103	1,352	1,352
Provision	1,176	240	1,548	9	(249)
Ending balance	2,651	1,361	2,651	1,361	1,103
Collectively evaluated for impairment	2,636	1,100	2,636	1,100	1,082
Individually evaluated for impairment		241		241
Purchased credit impaired	15	20	15	20	21
Total allowance for loan losses	2,651	1,361	2,651	1,361	1,103
Loans receivable:
Collectively evaluated for impairment	228,441	137,668	228,441	137,668	138,220
Individually evaluated for impairment	1,740	4,159	1,740	4,159	1,751
Purchased credit impaired	78	100	78	100	96
Total loans held for investment	230,259	141,927	230,259	141,927	140,067
Consumer [Member]
Loans receivable:
Total loans held for investment	107,516		107,516		114,086
Residential mortgage [Member]
Allowance for loan losses:
Beginning balance	624	644	654	492	492
Charge-offs				(186)	(186)
Recoveries	7	10	15	25	27
Provision	(65)	(26)	(103)	297	321
Ending balance	566	628	566	628	654
Collectively evaluated for impairment	566	628	566	628	566
Individually evaluated for impairment					88
Total allowance for loan losses	566	628	566	628	654
Loans receivable:
Collectively evaluated for impairment	99,358	97,759	99,358	97,759	104,858
Individually evaluated for impairment	1,296	1,344	1,296	1,344	1,328
Purchased credit impaired	164	180	164	180	176
Total loans held for investment	100,818	99,283	100,818	99,283	106,362
Other consumer [Member]
Allowance for loan losses:
Beginning balance	213	1,330	1,318	55	55
Charge-offs	(2)	(2)	(1,287)	(52)	(54)
Recoveries	1	8	617	12	12
Provision	78	(17)	(358)	1,304	1,305
Ending balance	290	1,319	290	1,319	1,318
Collectively evaluated for impairment	188	40	188	40	39
Individually evaluated for impairment	102	1,278	102	1,278	1,278
Purchased credit impaired		1		1	1
Total allowance for loan losses	290	1,319	290	1,319	1,318
Loans receivable:
Collectively evaluated for impairment	6,437	6,394	6,437	6,394	6,277
Individually evaluated for impairment	261	1,429	261	1,429	1,447
Purchased credit impaired		1		1
Total loans held for investment	$ 6,698	$ 7,824	$ 6,698	$ 7,824	$ 7,724