Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI (2) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) Contract	Sep. 30, 2014 USD ($) Contract	Sep. 30, 2015 USD ($) Contract	Sep. 30, 2014 USD ($) Contract
Troubled Debt Restructurings [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract			14	16
Pre-Modification Outstanding Recorded Investment			$ 4,007	$ 1,172
Post-Modification Outstanding Recorded Investment			$ 4,007	$ 1,158
Troubled Debt Restructurings [Member] | Secured by 1-4 Family Residential Properties [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract	2	2	10	16
Pre-Modification Outstanding Recorded Investment	$ 35	$ 191	$ 495	$ 1,172
Post-Modification Outstanding Recorded Investment	$ 35	$ 191	$ 495	$ 1,158
Troubled Debt Restructurings [Member] | Loans secured by Nonfarm, Nonresidential Properties [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts | Contract			4	0
Pre-Modification Outstanding Recorded Investment			$ 3,512	$ 0
Post-Modification Outstanding Recorded Investment			$ 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			$ 243	$ 106