Loans - Portfolio by Type and Class (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 3,098,220	$ 3,130,669
Loans held for sale	23,989	384
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	2,301,928	1,933,557
Loans held for sale	23,989	384
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	796,292	1,197,112
Commercial & Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,053,925	1,206,452
Commercial & Industrial \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	904,331	850,048
Commercial & Industrial \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	149,594	356,404
Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	394,210	353,889
Owner occupied commercial real estate \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	264,876	188,908
Owner occupied commercial real estate \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	129,334	164,981
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,143,751	904,115
Commercial real estate \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	816,029	521,887
Commercial real estate \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	327,722	382,228
Construction, land & land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	249,704	358,813
Construction, land & land development \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	179,999	242,611
Construction, land & land development \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	69,705	116,202
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	245,191	293,483
Residential mortgage \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	127,445	120,260
Residential mortgage \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	117,746	173,223
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	11,439	13,917
Consumer and other \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	9,248	9,843
Consumer and other \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 2,191	$ 4,074

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. 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=65884687&loc=d3e4428-111522

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- Definition

The face amount of loans that will be sold to other entities.

+ References

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