Loans (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Composition of loans by primary loan classification
Loans	$ 1,709,258	$ 1,584,594
Commercial and industrial
Composition of loans by primary loan classification
Loans	500,478	426,930
Construction and development
Composition of loans by primary loan classification
Loans	135,786	131,253
Real estate mortgage
Composition of loans by primary loan classification
Loans	1,038,864	989,631
Consumer
Composition of loans by primary loan classification
Loans	$ 34,130	$ 36,780

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.

Reference 1: 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=28368275&loc=d3e5074-111524

Reference 2: 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

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