LOANS - Portfolio by Type and Class (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 3,190,485	$ 3,098,220
Loans held for sale	7,156	23,989
Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	2,676,491	2,301,928
Loans held for sale	7,156	23,989
Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	513,994	796,292
Commercial & industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,286,496	1,053,925
Commercial & industrial \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,223,027	904,331
Commercial & industrial \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	63,469	149,594
Owner occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	415,230	394,210
Owner occupied commercial real estate \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	327,906	264,876
Owner occupied commercial real estate \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	87,324	129,334
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,067,779	1,143,751
Commercial real estate \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	823,361	816,029
Commercial real estate \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	244,418	327,722
Construction, land & land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	164,952	249,704
Construction, land & land development \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	136,998	179,999
Construction, land & land development \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	27,954	69,705
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	238,580	245,191
Residential mortgage \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	149,021	127,445
Residential mortgage \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	89,559	117,746
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	17,448	11,439
Consumer and other \| Originated
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	16,178	9,248
Consumer and other \| Acquired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 1,270	$ 2,191

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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