Allowance for Credit Losses (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Allowance for Credit Losses

Activity in the allowance for credit losses by class of loans is summarized as follows:

	Year ended December 31, 2020
(Dollars in thousands)	Construction and land development - commercial		Owner occupied commercial mortgage		Non-owner occupied commercial mortgage		Commercial and industrial and leases		Residential mortgage		Revolving mortgage		Construction and land development - consumer		Consumer auto		Consumer other		PCD		Total
Allowance for credit losses:
Balance at December 31, 2019	$	33,213	$	36,444	$	11,102	$	61,610	$	18,232	$	19,702	$	2,709	$	4,292	$	30,301	$	7,536	$	225,141
Adoption of ASC 326	(31,061)		(19,316)		460		(37,637)		17,118		3,665		(1,291)		1,100		10,037		19,001		(37,924)
Balance at January 1, 2020	2,152		17,128		11,562		23,973		35,350		23,367		1,418		5,392		40,338		26,537		187,217
Provision (credits)	4,301		6,729		12,917		13,816		9,684		1,134		266		6,297		10,410		(7,202)		58,352
Initial allowance on PCD loans	—		—		—		—		—		—		—		—		—		1,193		1,193
Charge-offs	(138)		(593)		(1,951)		(14,904)		(1,653)		(1,662)		(70)		(3,646)		(17,188)		(3,300)		(45,105)
Recoveries	431		401		124		4,894		717		1,918		117		1,417		5,879		6,759		22,657
Balance at December 31, 2020	$	6,746	$	23,665	$	22,652	$	27,779	$	44,098	$	24,757	$	1,731	$	9,460	$	39,439	$	23,987	$	224,314

	Years ended December 31, 2019 and 2018
(Dollars in thousands)	Construction and land development - commercial		Commercial mortgage		Other commercial real estate		Commercial and industrial and leases		Other		Residential mortgage		Revolving mortgage		Construction and land development - non- commercial		Consumer		PCI		Total
Allowance for credit losses:
Balance at January 1, 2018	$	24,470	$	45,005	$	4,571	$	59,824	$	4,689	$	15,706	$	22,436	$	3,962	$	31,204	$	10,026	$	221,893
Provision (credits)	10,533		(1,490)		(2,171)		2,511		(2,827)		897		1,112		(1,520)		22,187		(765)		28,467
Charge-offs	(44)		(1,140)		(69)		(10,211)		(130)		(1,689)		(3,235)		(219)		(22,817)		(117)		(39,671)
Recoveries	311		1,076		150		3,496		489		558		1,549		127		5,267		—		13,023
Balance at December 31, 2018	35,270		43,451		2,481		55,620		2,221		15,472		21,862		2,350		35,841		9,144		223,712
Provision (credits)	(2,171)		2,384		(285)		14,212		(754)		3,481		(788)		359		16,611		(1,608)		31,441
Charge-offs	(196)		(1,096)		—		(13,352)		(100)		(1,137)		(2,584)		—		(24,562)		—		(43,027)
Recoveries	310		596		15		2,894		869		416		1,212		—		6,703		—		13,015
Balance at December 31, 2019	$	33,213	$	45,335	$	2,211	$	59,374	$	2,236	$	18,232	$	19,702	$	2,709	$	34,593	$	7,536	$	225,141

Activity in the allowance for credit losses for unfunded commitments is summarized as follows:

(Dollars in thousands)	Year ended December 31, 2020
Allowance for credit losses:
Balance at December 31, 2019	$	1,055
Adoption of ASC 326	8,885
Balance at January 1, 2020	$	9,940
Provision	2,874
Balance at December 31, 2020	12,814

The following table presents information on collateral-dependent loans by class and includes the amortized cost of collateral-dependent loans and leases, the net realizable value of the collateral, the extent to which collateral secures collateral-dependent loans and the associated ACL as of December 31, 2020 were as follows:

(Dollars in thousands)	Collateral-Dependant Loans		Net Realizable Value of Collateral		Collateral Coverage		Allowance for Credit Losses
Commercial loans:
Construction and land development	$	1,424	$	1,795	126.1	%	$	—
Owner occupied commercial mortgage	9,792		14,253		145.6		—
Non-owner occupied commercial mortgage	5,556		7,577		136.4		—
Total commercial loans	16,772		23,625		140.9		—
Consumer:
Residential mortgage	23,011		29,775		129.4		131
Total non-PCD loans	39,783		53,400		134.2		131
PCD	19,042		27,872		146.4		—
Total collateral-dependent loans	$	58,825	$	81,272	138.2	%	$	131

The following tables present the allowance and recorded investment in loans and leases by class of loans, as well as the associated impairment method at December 31, 2019.

	December 31, 2019
(Dollars in thousands)	Construction and land development - commercial		Commercial mortgage		Other commercial real estate		Commercial and industrial and leases		Other		Residential mortgage		Revolving mortgage		Construction and land development - non-commercial		Consumer		Total
Non-PCI Loans
Allowance for loan and lease losses:
ALLL for loans and leases individually evaluated for impairment	$	463	$	3,650	$	39	$	1,379	$	103	$	3,278	$	2,722	$	174	$	1,107	$	12,915
ALLL for loans and leases collectively evaluated for impairment	32,750		41,685		2,172		57,995		2,133		14,954		16,980		2,535		33,486		204,690
Total allowance for loan and lease losses	$	33,213	$	45,335	$	2,211	$	59,374	$	2,236	$	18,232	$	19,702	$	2,709	$	34,593	$	217,605
Loans and leases:
Loans and leases individually evaluated for impairment	$	4,655	$	70,149	$	1,268	$	12,182	$	639	$	60,442	$	28,869	$	3,882	$	3,513	$	185,599
Loans and leases collectively evaluated for impairment	1,008,799		12,212,486		540,760		4,391,610		309,454		5,233,475		2,310,203		353,503		1,776,891		28,137,181
Total loan and leases	$	1,013,454	$	12,282,635	$	542,028	$	4,403,792	$	310,093	$	5,293,917	$	2,339,072	$	357,385	$	1,780,404	$	28,322,780

The following tables present the recorded investment and related allowance in non-PCI impaired loans and leases by class of loans, as well as the unpaid principle balance.

	December 31, 2019
(Dollars in thousands)	With a recorded allowance		With no recorded allowance		Total		Unpaid principal balance		Related allowance recorded
Non-PCI impaired loans and leases
Commercial:
Construction and land development	$	1,851	$	2,804	$	4,655	$	5,109	$	463
Commercial mortgage	42,394		27,755		70,149		74,804		3,650
Other commercial real estate	318		950		1,268		1,360		39
Commercial and industrial and leases	7,547		4,635		12,182		13,993		1,379
Other	406		233		639		661		103
Total commercial loans	52,516		36,377		88,893		95,927		5,634
Noncommercial:
Residential mortgage	48,796		11,646		60,442		64,741		3,278
Revolving mortgage	26,104		2,765		28,869		31,960		2,722
Construction and land development	2,470		1,412		3,882		4,150		174
Consumer	3,472		41		3,513		3,821		1,107
Total noncommercial loans	80,842		15,864		96,706		104,672		7,281
Total non-PCI impaired loans and leases	$	133,358	$	52,241	$	185,599	$	200,599	$	12,915

The following tables show the average non-PCI impaired loan balance and the interest income recognized by loan class for the years ended December 31, 2019 and 2018:

	2019				2018
(Dollars in thousands)	Average Balance		Interest Income Recognized		Average Balance		Interest Income Recognized
Non-PCI impaired loans and leases:
Commercial:
Construction and land development	$	3,915	$	53	$	1,734	$	84
Commercial mortgage	64,363		2,188		65,943		2,569
Other commercial real estate	919		27		1,225		43
Commercial and industrial and leases	11,884		482		9,560		364
Other	396		11		135		3
Total commercial	81,477		2,761		78,597		3,063
Noncommercial:
Residential mortgage	52,045		1,386		41,368		1,237
Revolving mortgage	29,516		1,009		26,759		900
Construction and land development	3,589		116		3,677		172
Consumer	3,311		138		2,722		116
Total noncommercial	88,461		2,649		74,526		2,425
Total non-PCI impaired loans and leases	$	169,938	$	5,410	$	153,123	$	5,488

Allocation of Allowance for Credit Losses

The following table presents the PCI allowance and recorded investment in loans at December 31, 2019.

(Dollars in thousands)	December 31, 2019
Allowance for loan losses:
ALLL for loans acquired with deteriorated credit quality	$	7,536
Loans acquired with deteriorated credit quality	558,716

Troubled Debt Restructuring, Summary of Accrual Status

The following tables provides a summary of total TDRs by accrual status. Total TDRs at December 31, 2020 were $208.2 million. Total TDRs at December 31, 2019, were $171.2 million, of which $154.0 million were non-PCI and $17.2 million were PCI. Total TDRs at December 31, 2018, were $156.1 million, of which $137.9 million were non-PCI and $18.2 million were PCI.

	December 31, 2020
(Dollars in thousands)	Accruing		Nonaccruing		Total
Commercial loans:
Construction and land development	$	578	$	54	$	632
Owner occupied commercial mortgage	37,574		10,889		48,463
Non-owner occupied commercial mortgage	18,336		1,649		19,985
Commercial and industrial and leases	29,131		3,528		32,659
Total commercial loans	85,619		16,120		101,739
Consumer:
Residential mortgage	29,458		19,380		48,838
Revolving mortgage	20,124		7,128		27,252
Construction and land development	1,573		9		1,582
Consumer auto	2,018		696		2,714
Consumer other	955		137		1,092
Total consumer loans	54,128		27,350		81,478
PCD loans	17,617		7,346		24,963
Total loans	$	157,364	$	50,816	$	208,180

	December 31, 2019						December 31, 2018
(Dollars in thousands)	Accruing		Nonaccruing		Total		Accruing		Nonaccruing		Total
Commercial loans:
Construction and land development	$	487	$	2,279	$	2,766	$	1,946	$	352	$	2,298
Commercial mortgage	50,819		11,116		61,935		53,270		7,795		61,065
Other commercial real estate	571		—		571		851		9		860
Commercial and industrial and leases	9,430		2,409		11,839		7,986		2,060		10,046
Other	320		105		425		118		173		291
Total commercial loans	61,627		15,909		77,536		64,171		10,389		74,560
Noncommercial:
Residential mortgage	41,813		16,048		57,861		37,903		9,621		47,524
Revolving mortgage	21,032		7,367		28,399		20,492		8,196		28,688
Construction and land development	1,452		2,430		3,882		2,227		110		2,337
Consumer	2,826		688		3,514		2,300		721		3,021
Total noncommercial loans	67,123		26,533		93,656		62,922		18,648		81,570
Total loans	$	128,750	$	42,442	$	171,192	$	127,093	$	29,037	$	156,130

Troubled Debt Restructurings on Financing Receivables

	2020						2019						2018
	All restructurings			Restructurings with payment default			All restructurings			Restructurings with payment default			All restructurings			Restructurings with payment default
	Number of loans	Amortized cost at period end		Number of loans	Amortized cost at period end		Number of loans	Amortized cost at period end		Number of loans	Amortized cost at period end		Number of loans	Amortized cost at period end		Number of loans	Amortized cost at period end
(Dollars in thousands)
Loans and leases
Interest only period provided
Commercial loans	31	$	28,145	4	$	4,498	11	$	1,595	1	$	238	3	$	1,003	—	$	—
Consumer loans	6	4,169		5	2,569		7	4,018		2	2,717		—	—		—	—
Total interest only	37	32,314		9	7,067		18	5,613		3	2,955		3	1,003		—	—
Loan term extension
Commercial loans	26	5,444		5	1,471		16	3,904		5	533		21	3,933		4	675
Consumer loans	66	5,689		43	3,241		2	342		1	306		21	1,554		4	190
Total loan term extension	92	11,133		48	4,712		18	4,246		6	839		42	5,487		8	865
Below market interest rate
Commercial loans	98	33,870		26	1,912		90	13,932		24	2,634		85	12,859		24	2,998
Consumer loans	156	6,074		60	3,897		176	12,458		66	4,014		184	15,545		68	5,461
Total below market interest rate	254	39,944		86	5,809		266	26,390		90	6,648		269	28,404		92	8,459
Discharged from bankruptcy
Commercial loans	30	1,168		17	286		25	5,571		20	5,028		26	2,043		8	825
Consumer loans	186	8,129		66	2,928		178	10,349		71	4,239		151	6,617		56	3,169
Total discharged from bankruptcy	216	9,297		83	3,214		203	15,920		91	9,267		177	8,660		64	3,994
Total restructurings	599	$	92,688	226	$	20,802	505	$	52,169	190	$	19,709	491	$	43,554	164	$	13,318