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Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (2) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($) Contract	Jun. 30, 2014 USD ($) Contract	Jun. 30, 2015 USD ($) Contract	Jun. 30, 2014 USD ($) Contract
Troubled Debt Restructurings [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract	6	4	12	14
Pre-Modification Outstanding Recorded Investment	$ 3,594	$ 278	$ 3,972	$ 981
Post-Modification Outstanding Recorded Investment	$ 3,594	$ 273	$ 3,972	$ 967
Troubled Debt Restructurings [Member] | Secured by 1-4 Family Residential Properties [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract	2	4	8	14
Pre-Modification Outstanding Recorded Investment	$ 82	$ 278	$ 460	$ 981
Post-Modification Outstanding Recorded Investment	$ 82	$ 273	$ 460	$ 967
Troubled Debt Restructurings [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract	4	0	4	0
Pre-Modification Outstanding Recorded Investment	$ 3,512	$ 0	$ 3,512	$ 0
Post-Modification Outstanding Recorded Investment	$ 3,512	$ 0	$ 3,512	$ 0
Troubled Debt Restructurings that Subsequently Defaulted [Member] | Secured by 1-4 Family Residential Properties [Member]
Troubled Debt Restructurings that Subsequently Defaulted [Abstract]
Number of Contracts | Contract			4	1
Recorded Investment			$ 245	$ 108

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