Other Real Estate and Covered Other Real Estate, Covered Other Real Estate (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Other real estate, covered other real estate [Rollforward]
Covered other real estate, beginning of period	$ 6,060	$ 5,108
Transfers from covered loans	266	690
FASB ASC 310-30 adjustment for the residual recorded investment	(902)	9
Net transfers from covered loans	(636)	699
Disposals	(1,404)	(870)
Write-downs	(1,155)	(791)
Covered other real estate, end of period	2,865	4,146
Loss, net on the sale of covered other real estate included in ORE/Foreclosure expense	(54)	(132)
Other real estate, covered other real estate [Line Items]
Total covered other real estate	6,060	$ 5,108
Construction, Land Development and Other Land Properties [Member]
Other real estate, covered other real estate [Rollforward]
Covered other real estate, beginning of period	1,917
Covered other real estate, end of period	759
Other real estate, covered other real estate [Line Items]
Total covered other real estate	759
1-4 Family Residential Properties [Member]
Other real estate, covered other real estate [Rollforward]
Covered other real estate, beginning of period	1,103
Covered other real estate, end of period	356
Other real estate, covered other real estate [Line Items]
Total covered other real estate	1,103
Nonfarm, Nonresidential Properties [Member]
Other real estate, covered other real estate [Rollforward]
Covered other real estate, beginning of period	2,296
Covered other real estate, end of period	1,359
Other real estate, covered other real estate [Line Items]
Total covered other real estate	2,296
Other Real Estate Properties [Member]
Other real estate, covered other real estate [Rollforward]
Covered other real estate, beginning of period	744
Covered other real estate, end of period	391
Other real estate, covered other real estate [Line Items]
Total covered other real estate	$ 744