Allowance for Probable Loan Losses (Tables)

6 Months Ended

Jun. 30, 2017

Allowance for Probable Loan Losses

Summary of the transactions in the allowance for probable loan losses by loan class

	Three Months Ended June 30, 2017
	Domestic														Foreign
			Commercial
			Real Estate:
			Other		Commercial
			Construction &		Real Estate:		Commercial
			Land		Farmland &		Real Estate:		Residential:		Residential:
	Commercial		Development		Commercial		Multifamily		First Lien		Junior Lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at March 31,	$	25,853	$	13,789	$	16,721	$	818	$	2,391	$	3,186	$	504	$	924	$	64,186
Losses charged to allowance		(2,264)		—		(40)		—		(30)		(33)		(39)		—		(2,406)
Recoveries credited to allowance		2,154		2		89		—		2		73		13		1		2,334
Net (losses) recoveries  charged to allowance		(110)		2		49		—		(28)		40		(26)		1		(72)
Provision charged to operations		(603)		(542)		702		179		(49)		1,131		10		(23)		805
Balance at June 30,	$	25,140	$	13,249	$	17,472	$	997	$	2,314	$	4,357	$	488	$	902	$	64,919

	Three Months Ended June 30, 2016
	Domestic														Foreign
			Commercial
			Real Estate:
			Other		Commercial
			Construction &		Real Estate:		Commercial
			Land		Farmland &		Real Estate:		Residential:		Residential:
	Commercial		Development		Commercial		Multifamily		First Lien		Junior Lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at March 31,	$	25,783	$	10,870	$	16,974	$	910	$	2,369	$	3,420	$	530	$	928	$	61,784
Losses charged to allowance		(5,396)		(2)		(1,843)		—		(23)		(155)		(116)		—		(7,535)
Recoveries credited to allowance		513		3		75		—		4		76		5		11		687
Net losses charged to allowance		(4,883)		1		(1,768)		—		(19)		(79)		(111)		11		(6,848)
Provision charged to operations		5,082		238		1,736		(55)		(73)		59		113		(3)		7,097
Balance at June 30,	$	25,982	$	11,109	$	16,942	$	855	$	2,277	$	3,400	$	532	$	936	$	62,033

	Six Months Ended June 30, 2017
	Domestic														Foreign
			Commercial
			Real Estate:
			Other		Commercial
			Construction &		Real Estate:		Commercial
			Land		Farmland &		Real Estate:		Residential:		Residential:
	Commercial		Development		Commercial		Multifamily		First Lien		Junior Lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31,	$	25,649	$	13,889	$	16,731	$	806	$	2,455	$	3,716	$	531	$	884	$	64,661
Losses charged to allowance		(4,999)		—		(40)		—		(61)		(138)		(160)		—		(5,398)
Recoveries credited to allowance		2,853		3		147		—		7		97		29		15		3,151
Net (losses) recoveries  charged to allowance		(2,146)		3		107		—		(54)		(41)		(131)		15		(2,247)
Provision charged to operations		1,637		(643)		634		191		(87)		682		88		3		2,505
Balance at June 30,	$	25,140	$	13,249	$	17,472	$	997	$	2,314	$	4,357	$	488	$	902	$	64,919

	Six Months Ended June 30, 2016
	Domestic														Foreign
			Commercial
			Real Estate:
			Other		Commercial
			Construction &		Real Estate:		Commercial
			Land		Farmland &		Real Estate:		Residential:		Residential:
	Commercial		Development		Commercial		Multifamily		First Lien		Junior Lien		Consumer		Foreign		Total
	(Dollars in Thousands)
Balance at December 31,	$	21,431	$	13,920	$	19,769	$	1,248	$	3,509	$	5,321	$	638	$	1,152	$	66,988
Losses charged to allowance		(24,467)		(2)		(1,890)		(180)		(30)		(324)		(217)		—		(27,110)
Recoveries credited to allowance		5,656		7		86		—		7		114		42		12		5,924
Net (losses) recoveries  charged to allowance		(18,811)		5		(1,804)		(180)		(23)		(210)		(175)		12		(21,186)
Provision charged to operations		23,362		(2,816)		(1,023)		(213)		(1,209)		(1,711)		69		(228)		16,231
Balance at June 30,	$	25,982	$	11,109	$	16,942	$	855	$	2,277	$	3,400	$	532	$	936	$	62,033

Loans individually or collectively evaluated for their impairment and related allowance, by loan class

	June 30, 2017
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	21,111	$	436	$	892,992	$	24,704
Commercial real estate: other construction & land development		2,805		329		1,835,469		12,920
Commercial real estate: farmland & commercial		9,319		863		1,951,041		16,609
Commercial real estate: multifamily		515		—		176,078		997
Residential: first lien		6,749		—		413,896		2,314
Residential: junior lien		965		—		657,155		4,357
Consumer		1,152		—		52,381		488
Foreign		754		—		183,464		902
Total	$	43,370	$	1,628	$	6,162,476	$	63,291

	December 31, 2016
	Loans Individually				Loans Collectively
	Evaluated For				Evaluated For
	Impairment				Impairment
	Recorded				Recorded
	Investment		Allowance		Investment		Allowance
	(Dollars in Thousands)
Domestic
Commercial	$	22,412	$	—	$	887,255	$	25,649
Commercial real estate: other construction & land development		4,776		371		1,712,099		13,518
Commercial real estate: farmland & commercial		10,810		546		1,932,260		16,185
Commercial real estate: multifamily		552		—		139,914		806
Residential: first lien		6,836		44		415,068		2,411
Residential: junior lien		978		—		609,340		3,716
Consumer		1,295		—		53,873		531
Foreign		746		—		166,474		884
Total	$	48,405	$	961	$	5,916,283	$	63,700

Loans accounted on non-accrual basis, by loan class

	June 30, 2017		December 31, 2016
	(Dollars in Thousands)
Domestic
Commercial	$	21,070	$	22,369
Commercial real estate: other construction & land development		2,805		4,776
Commercial real estate: farmland & commercial		6,865		8,314
Commercial real estate: multifamily		515		552
Residential: first lien		521		655
Residential: junior lien		172		166
Consumer		61		26
Foreign		394		387
Total non-accrual loans	$	32,403	$	37,245

Impaired loans, by loan class

	June 30, 2017
							Quarter to Date				Year to Date
			Unpaid				Average				Average
	Recorded		Principal		Related		Recorded		Interest		Recorded		Interest
	Investment		Balance		Allowance		Investment		Recognized		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	1,148	$	2,288	$	436	$	1,152	$	—	$	1,158	$	—
Commercial real estate: other construction & land development		363		382		329		767		—		1,033		—
Commercial real estate: farmland & commercial		1,325		2,462		863		1,314		—		1,567		—
Total impaired loans with related allowance	$	2,836	$	5,132	$	1,628	$	3,233	$	—	$	3,758	$	—

	June 30, 2017
					Quarter to Date				Year to Date
			Unpaid		Average				Average
	Recorded		Principal		Recorded		Interest		Recorded		Interest
	Investment		Balance		Investment		Recognized		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	19,963	$	47,689	$	20,005	$	1	$	20,463	$	1
Commercial real estate: other construction & land development		2,442		2,553		2,482		—		2,610		—
Commercial real estate: farmland & commercial		7,994		8,760		8,532		30		8,774		58
Commercial real estate: multifamily		515		532		521		—		530		—
Residential: first lien		6,749		6,812		6,774		81		6,874		159
Residential: junior lien		965		985		977		12		982		23
Consumer		1,152		1,153		1,156		—		1,212		1
Foreign		754		754		755		4		751		8
Total impaired loans with no related allowance	$	40,534	$	69,238	$	41,202	$	128	$	42,196	$	250

	December 31, 2016
			Unpaid				Average
	Recorded		Principal		Related		Recorded		Interest
	Investment		Balance		Allowance		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial real estate: other construction & land development	$	1,958	$	1,971	$	371	$	2,512	$	—
Commercial real estate: farmland & commercial		2,808		3,948		546		3,247		—
Commercial real estate: multifamily		62		62		44		62		—
Total impaired loans with related allowance	$	4,828	$	5,981	$	961	$	5,821	$	—

	December 31, 2016
			Unpaid		Average
	Recorded		Principal		Recorded		Interest
	Investment		Balance		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	21,412	$	50,737	$	19,354	$	3
Commercial real estate: other construction & land development		2,818		4,419		2,336		67
Commercial real estate: farmland & commercial		8,002		9,054		8,523		110
Commercial real estate: multifamily		552		562		401		—
Residential: first lien		6,774		6,847		6,860		298
Residential: junior lien		978		1,017		1,011		52
Consumer		1,295		1,295		1,214		1
Foreign		746		746		751		16
Total impaired loans with no related allowance	$	42,577	$	74,677	$	40,450	$	547

The following table details key information regarding the Company’s impaired loans by loan class at June 30, 2016:

	June 30, 2016
	Quarter to Date					Year to Date
	Average				Average
	Recorded		Interest		Recorded		Interest
	Investment		Recognized		Investment		Recognized
	(Dollars in Thousands)
Loans with Related Allowance
Domestic
Commercial	$	3,453	$	—	$	3,735	$	—
Commercial real estate: other construction & land development		162		—		163		—
Commercial real estate: farmland & commercial		5,761		22		5,941		48
Total impaired loans with related allowance	$	9,376	$	22	$	9,839	$	48

	June 30, 2016
	Quarter to Date				Year to Date
	Average				Average
	Recorded		Interest		Recorded		Interest
	Investment		Recognized		Investment		Recognized
	(Dollars in Thousands)
Loans with No Related Allowance
Domestic
Commercial	$	10,837	$	1	$	15,944	$	2
Commercial real estate: other construction & land development		5,155		20		5,726		45
Commercial real estate: farmland & commercial		5,709		—		6,649		—
Commercial real estate: multifamily		301		—		235		—
Residential: first lien		6,610		74		6,594		145
Residential: junior lien		1,008		12		1,022		27
Consumer		1,134		1		1,172		1
Foreign		755		4		751		8
Total impaired loans with no related allowance	$	31,509	$	112	$	38,093	$	228

Loans accounted for as trouble debt restructuring, by loan class

	June 30, 2017		December 31, 2016
		(Dollars in Thousands)
Domestic
Commercial	$	9,866	$	10,710
Commercial real estate:  farmland & commercial		3,044		3,086
Residential:  first lien		6,228		6,181
Residential:  junior lien		793		812
Consumer		1,091		1,269
Foreign		360		360
Total troubled debt restructuring	$	21,382	$	22,418

Information regarding the aging of past due loans, by loan class

	June 30, 2017
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
	(Dollars in Thousands)
Domestic
Commercial	$	2,351	$	406	$	20,338	$	768	$	23,095	$	891,008	$	914,103
Commercial real estate: other construction & land development		1,095		1,367		1,092		65		3,554		1,834,720		1,838,274
Commercial real estate: farmland & commercial		4,702		486		4,695		480		9,883		1,950,477		1,960,360
Commercial real estate: multifamily		—		850		515		—		1,365		175,228		176,593
Residential: first lien		3,613		748		4,450		3,957		8,811		411,834		420,645
Residential: junior lien		669		342		933		761		1,944		656,176		658,120
Consumer		877		181		437		379		1,495		52,038		53,533
Foreign		1,532		307		647		253		2,486		181,732		184,218
Total past due loans	$	14,839	$	4,687	$	33,107	$	6,663	$	52,633	$	6,153,213	$	6,205,846

	December 31, 2016
							90 Days or		Total
	30 - 59		60 - 89		90 Days or		greater &		Past				Total
	Days		Days		Greater		still accruing		Due		Current		Portfolio
		(Dollars in Thousands)
Domestic
Commercial	$	4,081	$	829	$	21,123	$	392	$	26,033	$	883,634	$	909,667
Commercial real estate: other construction & land development		1,502		396		4,456		9		6,354		1,710,521		1,716,875
Commercial real estate: farmland & commercial		3,454		3,054		6,150		289		12,658		1,930,412		1,943,070
Commercial real estate: multifamily		44		—		552		—		596		139,870		140,466
Residential: first lien		5,615		1,350		4,143		3,756		11,108		410,796		421,904
Residential: junior lien		762		178		540		382		1,480		608,838		610,318
Consumer		910		95		413		387		1,418		53,750		55,168
Foreign		931		425		397		11		1,753		165,467		167,220
Total past due loans	$	17,299	$	6,327	$	37,774	$	5,226	$	61,400	$	5,903,288	$	5,964,688

Summary of the loan portfolio by credit quality indicator, by loan class

			June 30, 2017
			Special		Watch		Watch List—		Watch List—
	Pass		Review		List—Pass		Substandard		Impaired
			(Dollars in Thousands)
Domestic
Commercial	$	733,341	$	34,695	$	1,066	$	123,890	$	21,111
Commercial real estate: other construction & land development		1,773,155		918		—		61,396		2,805
Commercial real estate: farmland & commercial		1,765,602		7,380		91,869		86,190		9,319
Commercial real estate: multifamily		176,078		—		—		—		515
Residential: first lien		413,290		42		—		564		6,749
Residential: junior lien		657,005		150		—		—		965
Consumer		52,381		—		—		—		1,152
Foreign		183,464		—		—		—		754
Total	$	5,754,316	$	43,185	$	92,935	$	272,040	$	43,370

			December 31, 2016
			Special		Watch		Watch List—		Watch List—
	Pass		Review		List—Pass		Substandard		Impaired
			(Dollars in Thousands)
Domestic
Commercial	$	720,350	$	90,746	$	1,121	$	75,038	$	22,412
Commercial real estate: other construction & land development		1,648,633		1,986		—		61,480		4,776
Commercial real estate: farmland & commercial		1,792,542		7,983		59,872		71,863		10,810
Commercial real estate: multifamily		139,914		—		—		—		552
Residential: first lien		413,638		814		—		616		6,836
Residential: junior lien		609,190		150		—		—		978
Consumer		53,873		—		—		—		1,295
Foreign		166,474		—		—		—		746
Total	$	5,544,614	$	101,679	$	60,993	$	208,997	$	48,405