Acquired Loans - Carrying Amount of Acquired Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Acquired Loans, Aging [Abstract]
Current		$ 362,970	$ 498,236
Acquired Loans, Past Due		26,430	50,029
Nonaccrual	[1]	1,011	1,144
Total Acquired Loans		390,411	549,409
Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	22,173	43,412
Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		361,452	515,242
Acquired Loans, Aging [Abstract]
Current		347,632	477,216
Acquired Loans, Past Due		24,119	47,490
Nonaccrual	[1]	960	1,077
Total Acquired Loans		372,711	525,783
Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	21,076	42,149
Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		16,967	22,108
Acquired Loans, Aging [Abstract]
Current		15,338	21,020
Acquired Loans, Past Due		2,311	2,539
Nonaccrual	[1]	51	67
Total Acquired Loans		17,700	23,626
Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	1,097	1,263
Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		28,464	35,877
Acquired Loans, Past Due		13,159	22,238
Nonaccrual	[1]		194
Total Acquired Loans		41,623	58,309
Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	13,021	21,985
Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		893	821
Acquired Loans, Past Due		128	376
Nonaccrual	[1]		0
Total Acquired Loans		1,021	1,197
Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	119	376
Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		83,163	107,779
Acquired Loans, Past Due		3,400	8,719
Nonaccrual	[1]	387	422
Total Acquired Loans		86,950	116,920
Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	1,220	5,162
Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		8,520	12,154
Acquired Loans, Past Due		1,538	1,026
Nonaccrual	[1]		0
Total Acquired Loans		10,058	13,180
Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	978	477
Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		129,182	188,094
Acquired Loans, Past Due		6,300	14,229
Nonaccrual	[1]	144	0
Total Acquired Loans		135,626	202,323
Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	5,913	13,275
Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		3,993	6,945
Acquired Loans, Past Due		645	727
Nonaccrual	[1]		0
Total Acquired Loans		4,638	7,672
Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]		0
Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		23,114	27,209
Acquired Loans, Past Due		746	604
Nonaccrual	[1]		0
Total Acquired Loans		23,860	27,813
Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	737	604
Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		1,286	728
Acquired Loans, Past Due			368
Nonaccrual	[1]		0
Total Acquired Loans		1,286	1,096
Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]		368
Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		54,376	86,234
Acquired Loans, Past Due		270	1,561
Nonaccrual	[1]	429	461
Total Acquired Loans		55,075	88,256
Commercial and Industrial Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	184	1,099
Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		573	168
Acquired Loans, Past Due			42
Nonaccrual	[1]	51	67
Total Acquired Loans		624	277
Commercial and Industrial Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]		42
Consumer Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		5,498	9,633
Acquired Loans, Past Due		143	139
Nonaccrual	[1]		0
Total Acquired Loans		5,641	9,772
Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	1	24
Consumer Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Total Acquired Loans			0
Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		23,835	22,390
Acquired Loans, Past Due		101	0
Nonaccrual	[1]		0
Total Acquired Loans		23,936	22,390
Other Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]		0
Other Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		73	204
Acquired Loans, Past Due			0
Nonaccrual	[1]		0
Total Acquired Loans		73	204
Other Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]		0
Commercial LHFI [Member] | Pass [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		224,725	320,915
Commercial LHFI [Member] | Pass [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		218,201	315,953
Commercial LHFI [Member] | Pass [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	6,524	4,962
Commercial LHFI [Member] | Special Mention [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		3,589	5,101
Commercial LHFI [Member] | Special Mention [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		3,425	4,646
Commercial LHFI [Member] | Special Mention [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	164	455
Commercial LHFI [Member] | Substandard [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		77,649	108,813
Commercial LHFI [Member] | Substandard [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		75,902	103,400
Commercial LHFI [Member] | Substandard [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	1,747	5,413
Commercial LHFI [Member] | Doubtful [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		7,963	11,931
Commercial LHFI [Member] | Doubtful [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		7,844	11,827
Commercial LHFI [Member] | Doubtful [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	119	104
Commercial LHFI [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		313,926	446,760
Commercial LHFI [Member] | Commercial Loan [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		305,372	435,826
Commercial LHFI [Member] | Commercial Loan [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	8,554	10,934
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Pass [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		15,839	20,224
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Pass [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	235	0
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Special Mention [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		253	280
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Special Mention [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Substandard [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		19,252	28,339
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Substandard [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	588	955
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Doubtful [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		3,874	5,821
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Doubtful [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	119	102
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Commercial Loan [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		39,218	54,664
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Commercial Loan [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	942	1,057
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Pass [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		22,272	30,796
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Pass [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	869	194
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Special Mention [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		27	760
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Special Mention [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	107	235
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Substandard [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		5,033	8,466
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Substandard [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	534	1,045
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Doubtful [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		331	388
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Doubtful [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Commercial Loan [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		27,663	40,410
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Commercial Loan [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	1,510	1,474
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Pass [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		106,924	157,753
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Pass [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	4,060	4,419
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Special Mention [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		2,301	3,452
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Special Mention [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	35	88
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Substandard [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		25,690	39,408
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Substandard [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	472	2,879
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Doubtful [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		711	1,710
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Doubtful [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Commercial Loan [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		135,626	202,323
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Commercial Loan [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	4,567	7,386
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Pass [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		19,346	22,754
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Pass [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	730	0
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Special Mention [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			92
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Special Mention [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		108
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Substandard [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		3,777	4,864
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Substandard [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	111	426
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Doubtful [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		731	95
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Doubtful [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		2
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Commercial Loan [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		23,854	27,805
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Commercial Loan [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	841	536
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Pass [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		36,670	64,720
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Pass [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	560	145
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Special Mention [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		844	17
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Special Mention [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	22	24
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Substandard [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		15,526	19,706
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Substandard [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	42	108
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Doubtful [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		2,035	3,813
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Doubtful [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Commercial Loan [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		55,075	88,256
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Commercial Loan [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	624	277
Commercial LHFI [Member] | Consumer Loans [Member] | Pass [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			0
Commercial LHFI [Member] | Consumer Loans [Member] | Special Mention [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			0
Commercial LHFI [Member] | Consumer Loans [Member] | Substandard [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			0
Commercial LHFI [Member] | Consumer Loans [Member] | Doubtful [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			0
Commercial LHFI [Member] | Consumer Loans [Member] | Commercial Loan [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			0
Commercial LHFI [Member] | Other Loans [Member] | Pass [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		17,150	19,706
Commercial LHFI [Member] | Other Loans [Member] | Pass [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	70	204
Commercial LHFI [Member] | Other Loans [Member] | Special Mention [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans			45
Commercial LHFI [Member] | Other Loans [Member] | Special Mention [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Other Loans [Member] | Substandard [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		6,624	2,617
Commercial LHFI [Member] | Other Loans [Member] | Substandard [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Other Loans [Member] | Doubtful [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		162	0
Commercial LHFI [Member] | Other Loans [Member] | Doubtful [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]		0
Commercial LHFI [Member] | Other Loans [Member] | Commercial Loan [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		23,936	22,368
Commercial LHFI [Member] | Other Loans [Member] | Commercial Loan [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans	[3]	70	204
Consumer LHFI [Member]
Acquired Loans, Aging [Abstract]
Current		72,289	96,194
Nonaccrual	[1]	145	117
Subtotal		76,485	102,649
Total Acquired Loans		390,411	549,409
Consumer LHFI [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		2,330	2,947
Consumer LHFI [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		1,721	3,391
Consumer LHFI [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		64,228	84,318
Nonaccrual	[1]	145	117
Subtotal		67,339	89,957
Total Acquired Loans		372,711	525,783
Consumer LHFI [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		2,007	2,474
Consumer LHFI [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		959	3,048
Consumer LHFI [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	8,061	11,876
Nonaccrual	[1],[3]		0
Subtotal	[3]	9,146	12,692
Total Acquired Loans	[3]	17,700	23,626
Consumer LHFI [Member] | Covered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]	323	473
Consumer LHFI [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]	762	343
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		2,353	3,338
Nonaccrual	[1]		0
Subtotal		2,405	3,645
Total Acquired Loans		41,623	58,309
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		24	25
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		28	282
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	70	140
Nonaccrual	[1],[3]		0
Subtotal	[3]	79	140
Total Acquired Loans	[3]	1,021	1,197
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]	9	0
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		56,371	71,316
Nonaccrual	[1]	145	117
Subtotal		59,287	76,510
Total Acquired Loans		86,950	116,920
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		1,841	2,335
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		930	2,742
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	7,472	10,925
Nonaccrual	[1],[3]		0
Subtotal	[3]	8,548	11,706
Total Acquired Loans	[3]	10,058	13,180
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]	314	473
Consumer LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]	762	308
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current			0
Nonaccrual	[1]		0
Subtotal			0
Total Acquired Loans		135,626	202,323
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	71	286
Nonaccrual	[1],[3]		0
Subtotal	[3]	71	286
Total Acquired Loans	[3]	4,638	7,672
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		6	8
Nonaccrual	[1]		0
Subtotal		6	8
Total Acquired Loans		23,860	27,813
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	445	525
Nonaccrual	[1],[3]		0
Subtotal	[3]	445	560
Total Acquired Loans	[3]	1,286	1,096
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		35
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current			0
Nonaccrual	[1]		0
Subtotal			0
Total Acquired Loans		55,075	88,256
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current	[3]		0
Nonaccrual	[1],[3]		0
Subtotal	[3]		0
Total Acquired Loans	[3]	624	277
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		5,498	9,634
Nonaccrual	[1]		0
Subtotal		5,641	9,772
Total Acquired Loans		5,641	9,772
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		142	114
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		1	24
Consumer LHFI [Member] | Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current			22
Nonaccrual	[1]		0
Subtotal			22
Total Acquired Loans		23,936	22,390
Consumer LHFI [Member] | Other Loans [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Other Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due			0
Consumer LHFI [Member] | Other Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current	[3]	3	0
Nonaccrual	[1],[3]		0
Subtotal	[3]	3	0
Total Acquired Loans	[3]	$ 73	204
Consumer LHFI [Member] | Other Loans [Member] | Covered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		0
Consumer LHFI [Member] | Other Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[3]		$ 0

[1] Acquired loans not accounted for under FASB ASC Topic 310-30.

[2] Past due 90 days or more but still accruing interest.

[3] (1) Total dollar balances are presented in this table; however, these loans are covered by the loss-share agreement with the FDIC. TNB is at risk for only 20% of the losses incurred on these loans.