LHFI and Allowance for Loan Losses, LHFI (Tables)

12 Months Ended

Dec. 31, 2016

Accounts Notes Loans And Financing Receivable Gross Allowance And Net [Abstract]

At December 31, 2016 and 2015, LHFI consisted of the following ($ in thousands):

	December 31,
	2016		2015
Loans secured by real estate:
Construction, land development and other land	$	831,437	$	824,723
Secured by 1-4 family residential properties		1,660,043		1,649,501
Secured by nonfarm, nonresidential properties		2,034,176		1,736,476
Other real estate secured		318,148		211,228
Commercial and industrial loans		1,528,434		1,343,211
Consumer loans		170,562		169,135
State and other political subdivision loans		917,515		734,615
Other loans		390,898		422,496
LHFI		7,851,213		7,091,385
Less allowance for loan losses, LHFI		71,265		67,619
Net LHFI	$	7,779,948	$	7,023,766

Summary of LHFI Evaluated for Impairment

The following tables detail LHFI individually and collectively evaluated for impairment at December 31, 2016 and 2015 ($ in thousands):

	December 31, 2016
	LHFI Evaluated for Impairment
	Individually		Collectively		Total
Loans secured by real estate:
Construction, land development and other land	$	3,323	$	828,114	$	831,437
Secured by 1-4 family residential properties		20,329		1,639,714		1,660,043
Secured by nonfarm, nonresidential properties		8,482		2,025,694		2,034,176
Other real estate secured		402		317,746		318,148
Commercial and industrial loans		15,824		1,512,610		1,528,434
Consumer loans		300		170,262		170,562
State and other political subdivision loans		—		917,515		917,515
Other loans		574		390,324		390,898
Total	$	49,234	$	7,801,979	$	7,851,213

	December 31, 2015
	LHFI Evaluated for Impairment
	Individually		Collectively		Total
Loans secured by real estate:
Construction, land development and other land	$	6,123	$	818,600	$	824,723
Secured by 1-4 family residential properties		23,079		1,626,422		1,649,501
Secured by nonfarm, nonresidential properties		17,800		1,718,676		1,736,476
Other real estate secured		145		211,083		211,228
Commercial and industrial loans		7,622		1,335,589		1,343,211
Consumer loans		31		169,104		169,135
State and other political subdivision loans		—		734,615		734,615
Other loans		512		421,984		422,496
Total	$	55,312	$	7,036,073	$	7,091,385

Impaired Financing Receivables

At December 31, 2016 and 2015, the carrying amount of LHFI individually evaluated for impairment consisted of the following ($ in thousands):

	December 31, 2016
	LHFI
	Unpaid		With No Related		With an		Total				Average
	Principal		Allowance		Allowance		Carrying		Related		Recorded
	Balance		Recorded		Recorded		Amount		Allowance		Investment
Loans secured by real estate:
Construction, land development and other land	$	6,743	$	2,260	$	1,063	$	3,323	$	616	$	4,723
Secured by 1-4 family residential properties		24,805		221		20,108		20,329		1,420		21,704
Secured by nonfarm, nonresidential properties		11,227		5,784		2,698		8,482		851		13,141
Other real estate secured		429		—		402		402		118		274
Commercial and industrial loans		16,887		11,461		4,363		15,824		2,425		11,723
Consumer loans		303		—		300		300		3		165
State and other political subdivision loans		—		—		—		—		—		—
Other loans		756		95		479		574		111		543
Total	$	61,150	$	19,821	$	29,413	$	49,234	$	5,544	$	52,273

	December 31, 2015
	LHFI
	Unpaid		With No Related		With an		Total				Average
	Principal		Allowance		Allowance		Carrying		Related		Recorded
	Balance		Recorded		Recorded		Amount		Allowance		Investment
Loans secured by real estate:
Construction, land development and other land	$	11,113	$	3,395	$	2,728	$	6,123	$	909	$	9,995
Secured by 1-4 family residential properties		27,678		283		22,796		23,079		1,230		24,350
Secured by nonfarm, nonresidential properties		20,387		8,037		9,763		17,800		3,402		21,758
Other real estate secured		160		—		145		145		15		732
Commercial and industrial loans		9,880		1,137		6,485		7,622		3,304		9,863
Consumer loans		34		—		31		31		—		59
State and other political subdivision loans		—		—		—		—		—		—
Other loans		642		—		512		512		128		570
Total	$	69,894	$	12,852	$	42,460	$	55,312	$	8,988	$	67,327

Impact of Modifications Classified as Troubled Debt Restructurings

The following tables illustrate the impact of modifications classified as TDRs as well as those TDRs modified within the last 12 months for which there was a payment default during the period for the periods presented ($ in thousands):

	Year Ended December 31, 2016
Troubled Debt Restructurings	Number of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Construction, land development and other land loans		1	$	14	$	14
Loans secured by 1-4 family residential properties		18		1,386		1,391
Loans secured by nonfarm, nonresidential properties		2		717		717
Commercial and industrial		5		10,043		9,982
Consumer loans		1		2		2
Total		27	$	12,162	$	12,106

	Year Ended December 31, 2015
Troubled Debt Restructurings	Number of Contracts		Pre-Modification Outstanding Recorded Investment		Post-Modification Outstanding Recorded Investment
Loans secured by 1-4 family residential properties		13	$	688	$	688
Loans secured by nonfarm, nonresidential properties		5		3,613		3,613
Total		18	$	4,301	$	4,301

Year Ended December 31, 2014

Troubled Debt Restructurings

Number of

Contracts

Pre-Modification

Outstanding

Recorded

Investment

Post-Modification

Outstanding

Recorded

Investment

Loans secured by 1-4 family residential properties

1,248

1,234

Troubled Debt Restructuring Subsequently Defaulted

	Years Ended December 31,
	2016				2015				2014
TDRs that Subsequently Defaulted	Number of Contracts		Recorded Investment		Number of Contracts		Recorded Investment		Number of Contracts		Recorded Investment
Loans secured by 1-4 family residential properties		1	$	—		5	$	260		1	$	103
Commercial and industrial		2		2,154		—		—		—		—
Total		3	$	2,154		5	$	260		1	$	103

Troubled Debt Restructuring Related to Loans Held for Investment, Excluding Covered Loans, by Loan Type

The following tables detail LHFI classified as TDRs by loan type at December 31, 2016, 2015 and 2014 ($ in thousands):

	December 31, 2016
	Accruing		Nonaccrual		Total
Loans secured by real estate:
Construction, land development and other land loans	$	—	$	405	$	405
Secured by 1-4 family residential properties		—		2,873		2,873
Secured by nonfarm, nonresidential properties		—		881		881
Commercial and industrial loans		53		10,266		10,319
Consumer loans		—		2		2
Total TDRs	$	53	$	14,427	$	14,480

	December 31, 2015
	Accruing		Nonaccrual		Total
Loans secured by real estate:
Construction, land development and other land loans	$	—	$	869	$	869
Secured by 1-4 family residential properties		1,426		2,424		3,850
Secured by nonfarm, nonresidential properties		809		3,662		4,471
Commercial and industrial loans		—		463		463
Total TDRs	$	2,235	$	7,418	$	9,653

	December 31, 2014
	Accruing		Nonaccrual		Total
Loans secured by real estate:
Construction, land development and other land loans	$	—	$	3,665	$	3,665
Secured by 1-4 family residential properties		1,385		3,733		5,118
Secured by nonfarm, nonresidential properties		—		1,854		1,854
Other real estate secured		—		149		149
Commercial and industrial loans		—		509		509
Total TDRs	$	1,385	$	9,910	$	11,295

Carrying Amount of Loans by Credit Quality Indicator

The tables below illustrate the carrying amount of LHFI by credit quality indicator at December 31, 2016 and 2015 ($ in thousands):

	December 31, 2016
	Commercial LHFI
	Pass -		Special Mention -		Substandard -		Doubtful -
	Categories 1-6		Category 7		Category 8		Category 9		Subtotal
Loans secured by real estate:
Construction, land development and other land	$	752,318	$	9,567	$	8,086	$	465	$	770,436
Secured by 1-4 family residential properties		124,615		170		6,162		129		131,076
Secured by nonfarm, nonresidential properties		1,989,554		4,394		38,913		584		2,033,445
Other real estate secured		315,829		762		890		—		317,481
Commercial and industrial loans		1,386,155		7,095		134,199		985		1,528,434
Consumer loans		—		—		—		—		—
State and other political subdivision loans		899,935		6,450		11,130		—		917,515
Other loans		382,890		—		2,685		350		385,925
Total	$	5,851,296	$	28,438	$	202,065	$	2,513	$	6,084,312

	Consumer LHFI
			Past Due		Past Due
	Current		30-89 Days		90 Days or More		Nonaccrual		Subtotal		Total LHFI
Loans secured by real estate:
Construction, land development and other land	$	60,701	$	188	$	54	$	58	$	61,001	$	831,437
Secured by 1-4 family residential properties		1,503,096		7,377		1,436		17,058		1,528,967		1,660,043
Secured by nonfarm, nonresidential properties		731		—		—		—		731		2,034,176
Other real estate secured		667		—		—		—		667		318,148
Commercial and industrial loans		—		—		—		—		—		1,528,434
Consumer loans		168,031		1,891		341		299		170,562		170,562
State and other political subdivision loans		—		—		—		—		—		917,515
Other loans		4,940		33		—		—		4,973		390,898
Total	$	1,738,166	$	9,489	$	1,831	$	17,415	$	1,766,901	$	7,851,213

	December 31, 2015
	Commercial LHFI
	Pass -		Special Mention -		Substandard -		Doubtful -
	Categories 1-6		Category 7		Category 8		Category 9		Subtotal
Loans secured by real estate:
Construction, land development and other land	$	746,227	$	—	$	15,637	$	529	$	762,393
Secured by 1-4 family residential properties		125,268		345		7,525		190		133,328
Secured by nonfarm, nonresidential properties		1,680,846		2,031		52,485		361		1,735,723
Other real estate secured		205,097		—		4,768		—		209,865
Commercial and industrial loans		1,295,760		9,473		37,284		694		1,343,211
Consumer loans		—		—		—		—		—
State and other political subdivision loans		713,616		12,478		8,521		—		734,615
Other loans		414,089		183		2,663		375		417,310
Total	$	5,180,903	$	24,510	$	128,883	$	2,149	$	5,336,445

	Consumer LHFI
			Past Due		Past Due
	Current		30-89 Days		90 Days or More		Nonaccrual		Subtotal		Total LHFI
Loans secured by real estate:
Construction, land development and other land	$	62,158	$	146	$	—	$	26	$	62,330	$	824,723
Secured by 1-4 family residential properties		1,485,914		7,565		2,058		20,636		1,516,173		1,649,501
Secured by nonfarm, nonresidential properties		753		—		—		—		753		1,736,476
Other real estate secured		1,363		—		—		—		1,363		211,228
Commercial and industrial loans		—		—		—		—		—		1,343,211
Consumer loans		166,681		2,182		242		30		169,135		169,135
State and other political subdivision loans		—		—		—		—		—		734,615
Other loans		5,186		—		—		—		5,186		422,496
Total	$	1,722,055	$	9,893	$	2,300	$	20,692	$	1,754,940	$	7,091,385

Aging Analysis of Past Due Loans and Nonaccrual Loans, Excluding Covered Loans by Loan Type

The following tables provide an aging analysis of past due and nonaccrual LHFI by loan type at December 31, 2016 and 2015 ($ in thousands):

	December 31, 2016
	Past Due
					90 Days						Current
	30-59 Days		60-89 Days		or More (1)		Total		Nonaccrual		Loans		Total LHFI
Loans secured by real estate:
Construction, land development and other land	$	248	$	37	$	54	$	339	$	3,323	$	827,775	$	831,437
Secured by 1-4 family residential properties		5,308		2,434		1,436		9,178		20,329		1,630,536		1,660,043
Secured by nonfarm, nonresidential properties		606		100		—		706		8,482		2,024,988		2,034,176
Other real estate secured		179		—		—		179		402		317,567		318,148
Commercial and industrial loans		571		213		—		784		15,824		1,511,826		1,528,434
Consumer loans		1,561		330		341		2,232		300		168,030		170,562
State and other political subdivision loans		1,035		—		—		1,035		—		916,480		917,515
Other loans		178		53		—		231		574		390,093		390,898
Total	$	9,686	$	3,167	$	1,831	$	14,684	$	49,234	$	7,787,295	$	7,851,213

(1)	Past due 90 days or more but still accruing interest.

	December 31, 2015
	Past Due
					90 Days						Current
	30-59 Days		60-89 Days		or More (1)		Total		Nonaccrual		Loans		Total LHFI
Loans secured by real estate:
Construction, land development and other land	$	214	$	—	$	—	$	214	$	6,123	$	818,386	$	824,723
Secured by 1-4 family residential properties		6,203		1,800		2,058		10,061		23,079		1,616,361		1,649,501
Secured by nonfarm, nonresidential properties		437		88		—		525		17,800		1,718,151		1,736,476
Other real estate secured		—		—		—		—		145		211,083		211,228
Commercial and industrial loans		921		45		—		966		7,622		1,334,623		1,343,211
Consumer loans		1,835		347		242		2,424		31		166,680		169,135
State and other political subdivision loans		65		—		—		65		—		734,550		734,615
Other loans		68		—		—		68		512		421,916		422,496
Total	$	9,743	$	2,280	$	2,300	$	14,323	$	55,312	$	7,021,750	$	7,091,385

(1)	Past due 90 days or more but still accruing interest.

Change in Allowance for Loan Losses

Changes in the allowance for loan losses, LHFI were as follows for the periods presented ($ in thousands):

	Years Ended December31,
	2016			2015			2014
Balance at beginning of period	$	67,619		$	69,616		$	66,448
Loans charged-off		(18,930	)		(22,469	)		(13,226	)
Recoveries		11,619			12,097			15,183
Net (charge-offs) recoveries		(7,311	)		(10,372	)		1,957
Provision for loan losses, LHFI		10,957			8,375			1,211
Balance at end of period	$	71,265		$	67,619		$	69,616

The following tables detail the balance in the allowance for loan losses, LHFI by loan type at December 31, 2016 and 2015, respectively ($ in thousands):

	2016
	Balance							Provision for			Balance
	January 1,		Charge-offs			Recoveries		Loan Losses			December 31,
Loans secured by real estate:
Construction, land development and other land	$	11,587	$	(311	)	$	1,380	$	(3,571	)	$	9,085
Secured by 1-4 family residential properties		10,678		(1,319	)		1,122		(134	)		10,347
Secured by nonfarm, nonresidential properties		21,563		(3,067	)		976		1,495			20,967
Other real estate secured		2,467		(27	)		7		(184	)		2,263
Commercial and industrial loans		15,815		(6,602	)		732		12,066			22,011
Consumer loans		2,879		(1,864	)		4,007		(1,781	)		3,241
State and other political subdivision loans		809		—			—		50			859
Other loans		1,821		(5,740	)		3,395		3,016			2,492
Total allowance for loan losses, LHFI	$	67,619	$	(18,930	)	$	11,619	$	10,957		$	71,265

	Disaggregated by Impairment Method
	Individually		Collectively		Total
Loans secured by real estate:
Construction, land development and other land	$	616	$	8,469	$	9,085
Secured by 1-4 family residential properties		1,420		8,927		10,347
Secured by nonfarm, nonresidential properties		851		20,116		20,967
Other real estate secured		118		2,145		2,263
Commercial and industrial loans		2,425		19,586		22,011
Consumer loans		3		3,238		3,241
State and other political subdivision loans		—		859		859
Other loans		111		2,381		2,492
Total allowance for loan losses, LHFI	$	5,544	$	65,721	$	71,265

	2015
	Balance							Provision for			Balance
	January 1,		Charge-offs			Recoveries		Loan Losses			December 31,
Loans secured by real estate:
Construction, land development and other land	$	13,073	$	(2,435	)	$	1,773	$	(824	)	$	11,587
Secured by 1-4 family residential properties		9,677		(2,473	)		920		2,554			10,678
Secured by nonfarm, nonresidential properties		18,523		(1,439	)		605		3,874			21,563
Other real estate secured		2,141		(24	)		136		214			2,467
Commercial and industrial loans		19,917		(8,081	)		1,761		2,218			15,815
Consumer loans		2,149		(2,171	)		3,289		(388	)		2,879
State and other political subdivision loans		1,314		—			—		(505	)		809
Other loans		2,822		(5,846	)		3,613		1,232			1,821
Total allowance for loan losses, LHFI	$	69,616	$	(22,469	)	$	12,097	$	8,375		$	67,619

	Disaggregated by Impairment Method
	Individually		Collectively		Total
Loans secured by real estate:
Construction, land development and other land	$	909	$	10,678	$	11,587
Secured by 1-4 family residential properties		1,230		9,448		10,678
Secured by nonfarm, nonresidential properties		3,402		18,161		21,563
Other real estate secured		15		2,452		2,467
Commercial and industrial loans		3,304		12,511		15,815
Consumer loans		—		2,879		2,879
State and other political subdivision loans		—		809		809
Other loans		128		1,693		1,821
Total allowance for loan losses, LHFI	$	8,988	$	58,631	$	67,619