Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (3) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Modifications [Line Items]
Nonaccrual	$ 68,438	$ 79,343
Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonaccrual	12,411	12,104
Consumer Loans [Member]
Financing Receivable, Modifications [Line Items]
Nonaccrual	44	$ 88
Troubled Debt Restructurings [Member]
Financing Receivable, Modifications [Line Items]
Accruing	2,463		$ 1,543
Nonaccrual	9,600		11,063
Total	12,063		12,606
Troubled Debt Restructurings [Member] \| Construction Land Development and Other Land Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing	0		0
Nonaccrual	1,664		4,521
Total	1,664		4,521
Troubled Debt Restructurings [Member] \| Secured by 1-4 Family Residential Properties [Member]
Financing Receivable, Modifications [Line Items]
Accruing	1,635		1,543
Nonaccrual	2,795		3,873
Total	4,430		5,416
Troubled Debt Restructurings [Member] \| Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable, Modifications [Line Items]
Accruing	828		0
Nonaccrual	4,584		1,979
Total	5,412		1,979
Troubled Debt Restructurings [Member] \| Other Real Estate Secured [Member]
Financing Receivable, Modifications [Line Items]
Accruing	0		0
Nonaccrual	62		159
Total	62		159
Troubled Debt Restructurings [Member] \| Commercial and Industrial Loans [Member]
Financing Receivable, Modifications [Line Items]
Accruing	0		0
Nonaccrual	495		531
Total	$ 495		$ 531

Recorded investment in TDR's that are still accruing.

No definition available.

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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

+ Details

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524

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