Acquired Loans - Carrying Amount of Acquired Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands		Dec. 31, 2016		Dec. 31, 2015
Acquired Loans, Aging [Abstract]
Current		$ 262,943		$ 362,970
Acquired Loans, Past Due		8,673		26,430
Nonaccrual	[1]	631		1,011
Total Acquired Loans		272,247		390,411
Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	3,730		22,173
Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		257,321		361,452
Acquired Loans, Aging [Abstract]
Current		259,628		347,632
Acquired Loans, Past Due		8,374		24,119
Nonaccrual	[1]	631		960
Total Acquired Loans		268,633		372,711
Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	3,591		21,076
Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		3,529	[3]	16,967
Acquired Loans, Aging [Abstract]
Current		3,315		15,338
Acquired Loans, Past Due		299		2,311
Nonaccrual	[1]	0		51
Total Acquired Loans		3,614	[3]	17,700
Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	139		1,097
Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		19,608		28,464
Acquired Loans, Past Due		1,242		13,159
Nonaccrual	[1]	0		0
Total Acquired Loans		20,850		41,623
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]	821		13,021
Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		0		893
Acquired Loans, Past Due		0		128
Nonaccrual	[1]	0		0
Total Acquired Loans		0	[3]	1,021
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]	0		119
Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		63,220		83,163
Acquired Loans, Past Due		2,665		3,400
Nonaccrual	[1]	41		387
Total Acquired Loans		65,926		86,950
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]	918		1,220
Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		3,315		8,520
Acquired Loans, Past Due		299		1,538
Nonaccrual	[1]	0		0
Total Acquired Loans		3,614	[3]	10,058
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]	139		978
Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		101,453		129,182
Acquired Loans, Past Due		2,039		6,300
Nonaccrual	[1]	328		144
Total Acquired Loans		103,820		135,626
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]	343		5,913
Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		0		3,993
Acquired Loans, Past Due		0		645
Nonaccrual	[1]	0		0
Total Acquired Loans		0	[3]	4,638
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		0
Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		16,796		23,114
Acquired Loans, Past Due		2,214		746
Nonaccrual	[1]	0		0
Total Acquired Loans		19,010		23,860
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]	1,445		737
Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		0		1,286
Acquired Loans, Past Due		0		0
Nonaccrual	[1]	0		0
Total Acquired Loans		0	[3]	1,286
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]	0		0
Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		36,535		54,376
Acquired Loans, Past Due		99		270
Nonaccrual	[1]	262		429
Total Acquired Loans		36,896		55,075
Commercial and Industrial Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	0		184
Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		0		573
Acquired Loans, Past Due		0		0
Nonaccrual	[1]	0		51
Total Acquired Loans		0	[3]	624
Commercial and Industrial Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	0		0
Consumer Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		3,250		5,498
Acquired Loans, Past Due		115		143
Nonaccrual	[1]	0		0
Total Acquired Loans		3,365		5,641
Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	64		1
Consumer Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Total Acquired Loans		0	[3]	0
Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		18,766		23,835
Acquired Loans, Past Due		0		101
Nonaccrual	[1]	0		0
Total Acquired Loans		18,766		23,936
Other Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	0		0
Other Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		0		73
Acquired Loans, Past Due		0		0
Nonaccrual	[1]	0		0
Total Acquired Loans		0	[3]	73
Other Loans [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due	[2]	0		0
Commercial LHFI [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		215,792		313,926
Commercial LHFI [Member] | Noncovered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		215,573		305,372
Commercial LHFI [Member] | Covered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		219		8,554
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		19,038		39,218
Commercial LHFI [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				942
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		18,529		27,663
Commercial LHFI [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		219		1,510
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		103,770		135,626
Commercial LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				4,567
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		18,582		23,854
Commercial LHFI [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Commercial Loan [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				841
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		36,890		55,075
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				624
Commercial LHFI [Member] | Other Loans [Member] | Noncovered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		18,764		23,936
Commercial LHFI [Member] | Other Loans [Member] | Covered Loans [Member] | Commercial Loan [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				70
Commercial LHFI [Member] | Pass [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		160,293		224,725
Commercial LHFI [Member] | Pass [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		160,141		218,201
Commercial LHFI [Member] | Pass [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		152		6,524
Commercial LHFI [Member] | Pass [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		12,148		15,839
Commercial LHFI [Member] | Pass [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				235
Commercial LHFI [Member] | Pass [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		14,400		22,272
Commercial LHFI [Member] | Pass [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		152		869
Commercial LHFI [Member] | Pass [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		83,271		106,924
Commercial LHFI [Member] | Pass [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				4,060
Commercial LHFI [Member] | Pass [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		15,344		19,346
Commercial LHFI [Member] | Pass [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				730
Commercial LHFI [Member] | Pass [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		22,024		36,670
Commercial LHFI [Member] | Pass [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				560
Commercial LHFI [Member] | Pass [Member] | Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		12,954		17,150
Commercial LHFI [Member] | Pass [Member] | Other Loans [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				70
Commercial LHFI [Member] | Special Mention [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		613		3,589
Commercial LHFI [Member] | Special Mention [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		602		3,425
Commercial LHFI [Member] | Special Mention [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		11		164
Commercial LHFI [Member] | Special Mention [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		99		253
Commercial LHFI [Member] | Special Mention [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		50		27
Commercial LHFI [Member] | Special Mention [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		11		107
Commercial LHFI [Member] | Special Mention [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		435		2,301
Commercial LHFI [Member] | Special Mention [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				35
Commercial LHFI [Member] | Special Mention [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		18		844
Commercial LHFI [Member] | Special Mention [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				22
Commercial LHFI [Member] | Substandard [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		51,904		77,649
Commercial LHFI [Member] | Substandard [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		51,848		75,902
Commercial LHFI [Member] | Substandard [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		56		1,747
Commercial LHFI [Member] | Substandard [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		6,469		19,252
Commercial LHFI [Member] | Substandard [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				588
Commercial LHFI [Member] | Substandard [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		4,010		5,033
Commercial LHFI [Member] | Substandard [Member] | Secured by 1-4 Family Residential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		56		534
Commercial LHFI [Member] | Substandard [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		19,553		25,690
Commercial LHFI [Member] | Substandard [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				472
Commercial LHFI [Member] | Substandard [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		2,673		3,777
Commercial LHFI [Member] | Substandard [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				111
Commercial LHFI [Member] | Substandard [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		13,494		15,526
Commercial LHFI [Member] | Substandard [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				42
Commercial LHFI [Member] | Substandard [Member] | Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		5,649		6,624
Commercial LHFI [Member] | Doubtful [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		2,982		7,963
Commercial LHFI [Member] | Doubtful [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		2,982		7,844
Commercial LHFI [Member] | Doubtful [Member] | Covered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				119
Commercial LHFI [Member] | Doubtful [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		322		3,874
Commercial LHFI [Member] | Doubtful [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans				119
Commercial LHFI [Member] | Doubtful [Member] | Secured by 1-4 Family Residential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		69		331
Commercial LHFI [Member] | Doubtful [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		511		711
Commercial LHFI [Member] | Doubtful [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		565		731
Commercial LHFI [Member] | Doubtful [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		1,354		2,035
Commercial LHFI [Member] | Doubtful [Member] | Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Commercial Loans [Abstract]
Acquired loans		161		162
Consumer LHFI [Member]
Acquired Loans, Aging [Abstract]
Current		54,232		72,289
Nonaccrual	[1]	24		145
Subtotal		56,455		76,485
Total Acquired Loans		272,247		390,411
Consumer LHFI [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		1,415		2,330
Consumer LHFI [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		784		1,721
Consumer LHFI [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		51,070		64,228
Nonaccrual	[1]	24		145
Subtotal		53,060		67,339
Total Acquired Loans		268,633		372,711
Consumer LHFI [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		1,278		2,007
Consumer LHFI [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		688		959
Consumer LHFI [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		3,162		8,061
Subtotal		3,395		9,146
Total Acquired Loans		3,614		17,700
Consumer LHFI [Member] | Covered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		137		323
Consumer LHFI [Member] | Covered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		96		762
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		1,801		2,353
Subtotal		1,812		2,405
Total Acquired Loans		20,850		41,623
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
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		11		28
Consumer LHFI [Member] | Construction, Land Development and Other Land [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current				70
Subtotal				79
Total Acquired Loans				1,021
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				9
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		45,533		56,371
Nonaccrual	[1]	24		145
Subtotal		47,397		59,287
Total Acquired Loans		65,926		86,950
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		1,227		1,841
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		613		930
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		3,162		7,472
Subtotal		3,395		8,548
Total Acquired Loans		3,614		10,058
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		137		314
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		96		762
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		50
Subtotal		50
Total Acquired Loans		103,820		135,626
Consumer LHFI [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current				71
Subtotal				71
Total Acquired Loans				4,638
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Noncovered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current		428		6
Subtotal		428		6
Total Acquired Loans		19,010		23,860
Consumer LHFI [Member] | Other Real Estate Secured [Member] | Covered Loans [Member] | Loans Secured by Real Estate [Member]
Acquired Loans, Aging [Abstract]
Current				445
Subtotal				445
Total Acquired Loans				1,286
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		6
Subtotal		6
Total Acquired Loans		36,896		55,075
Consumer LHFI [Member] | Commercial and Industrial Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Total Acquired Loans				624
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		3,250		5,498
Subtotal		3,365		5,641
Total Acquired Loans		3,365		5,641
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 30-89 Days [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		51		142
Consumer LHFI [Member] | Consumer Loans [Member] | Noncovered Loans [Member] | Past Due 90 Days or More [Member]
Acquired Loans, Aging [Abstract]
Acquired Loans, Past Due		64		1
Consumer LHFI [Member] | Other Loans [Member] | Noncovered Loans [Member]
Acquired Loans, Aging [Abstract]
Current		2
Subtotal		2
Total Acquired Loans		$ 18,766		23,936
Consumer LHFI [Member] | Other Loans [Member] | Covered Loans [Member]
Acquired Loans, Aging [Abstract]
Current				3
Subtotal				3
Total Acquired Loans				$ 73

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

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

[3] Trustmark’s loss share agreement with the FDIC covering the acquired covered loans other than loans secured by 1-4 family residential property expired on June 30, 2016. Trustmark’s loss share agreement with the FDIC covering the acquired covered loans secured by 1-4 family residential property will expire in 2021. Effective July 1, 2016, all acquired covered loans, excluding the acquired covered loans secured by 1-4 family residential property, were reclassified to acquired noncovered loans.