Loans - Credit Quality (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	$ 1,498,046	$ 1,351,917
Purchased Credit Impaired	6,952	7,498
Total loans held for investment	1,504,998	1,359,415	1,270,559
Grade 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	3,770	3,497
Grade 2 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	4,838	7,800
Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	301,298	312,986
Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,069,150	966,207
Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	73,228	33,073
Grade 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	32,595	12,466
Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	8,510	4,528
Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	4,555	8,843
Grade 9 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	102	2,517
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	1,397,482	1,245,329
Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	724,865	680,395
Purchased Credit Impaired	718	895
Total loans held for investment	725,583	681,290	635,951
Commercial & Industrial [Member] | Grade 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	2,972	2,657
Commercial & Industrial [Member] | Grade 2 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	4,838	7,750
Commercial & Industrial [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	170,254	161,581
Commercial & Industrial [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	468,161	474,831
Commercial & Industrial [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	64,068	10,970
Commercial & Industrial [Member] | Grade 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	8,826	11,790
Commercial & Industrial [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	3,798	3,471
Commercial & Industrial [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,846	6,106
Commercial & Industrial [Member] | Grade 9 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	102	1,239
Owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	131,662	155,306
Purchased Credit Impaired	1,278	1,655
Total loans held for investment	132,940	156,961	147,521
Owner occupied commercial real estate [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	23,164	26,548
Owner occupied commercial real estate [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	105,450	118,070
Owner occupied commercial real estate [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,593	10,631
Owner occupied commercial real estate [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,277	57
Owner occupied commercial real estate [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	178
Commerical real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	303,986	262,335
Purchased Credit Impaired	4,714	4,676
Total loans held for investment	308,700	267,011	238,053
Commerical real estate [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	33,815	37,750
Commerical real estate [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	247,950	213,946
Commerical real estate [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	2,460	8,752
Commerical real estate [Member] | Grade 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	17,118	569
Commerical real estate [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	2,056	502
Commerical real estate [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	587	816
Construction, land & land development [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	230,181	139,971
Purchased Credit Impaired	78	96
Total loans held for investment	230,259	140,067	141,927
Construction, land & land development [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	10,745	12,058
Construction, land & land development [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	207,385	124,972
Construction, land & land development [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	4,948	2,323
Construction, land & land development [Member] | Grade 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	6,528
Construction, land & land development [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	29	31
Construction, land & land development [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	546	587
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	107,516	114,086
Residential mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	100,654	106,186
Purchased Credit Impaired	164	176
Total loans held for investment	100,818	106,362	99,283
Residential mortgage [Member] | Grade 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	287	292
Residential mortgage [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	60,064	71,264
Residential mortgage [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	37,692	32,735
Residential mortgage [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile		149
Residential mortgage [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,315	418
Residential mortgage [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	1,296	1,328
Other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	6,698	7,724
Total loans held for investment	6,698	7,724	7,824
Other consumer [Member] | Grade 1 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	511	548
Other consumer [Member] | Grade 2 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile		50
Other consumer [Member] | Grade 3 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	3,256	3,785
Other consumer [Member] | Grade 4 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	2,512	1,653
Other consumer [Member] | Grade 5 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	159	248
Other consumer [Member] | Grade 6 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	123	107
Other consumer [Member] | Grade 7 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	35	49
Other consumer [Member] | Grade 8 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile	102	6
Other consumer [Member] | Grade 9 [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans, credit risk profile		1,278
Originated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	1,492,632	1,336,017
Originated [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	1,385,727	1,222,833
Originated [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	723,794	674,621
Originated [Member] | Owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	131,171	153,507
Originated [Member] | Commerical real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	300,659	254,838
Originated [Member] | Construction, land & land development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	230,103	139,867
Originated [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	106,905	113,184
Originated [Member] | Residential mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	100,446	105,888
Originated [Member] | Other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,459	7,296
Acquired [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	6,952	7,498
Total loans held for investment	12,366	23,398
Acquired [Member] | Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	6,788	7,322
Total loans held for investment	11,755	22,496
Acquired [Member] | Commercial & Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	718	895
Total loans held for investment	1,789	6,669
Acquired [Member] | Owner occupied commercial real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	1,278	1,655
Total loans held for investment	1,769	3,454
Acquired [Member] | Commerical real estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	4,714	4,676
Total loans held for investment	8,041	12,173
Acquired [Member] | Construction, land & land development [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	78	96
Total loans held for investment	156	200
Acquired [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	164	176
Total loans held for investment	611	902
Acquired [Member] | Residential mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Purchased Credit Impaired	164	176
Total loans held for investment	372	474
Acquired [Member] | Other consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	$ 239	$ 428