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Portfolio loans and allowance for loan losses (Tables)

12 Months Ended

Dec. 31, 2019

Portfolio loans and allowance for loan losses

Schedule of distribution of portfolio loans

Distributions of portfolio loans were as follows (dollars in thousands):


		December 31,
		2019			2018
Commercial		$	1,748,368		$	1,405,106
Commercial real estate			2,793,417			2,366,823
Real estate construction			401,861			288,197
Retail real estate			1,693,769			1,480,133
Retail other			49,834			28,169
Portfolio loans		$	6,687,249		$	5,568,428

Allowance for loan losses			(53,748)			(50,648)
Portfolio loans, net		$	6,633,501		$	5,517,780

Summary of risk grades segregated by category of portfolio loans (excluding accretable purchase accounting adjustments and clearings)

The following table is a summary of risk grades segregated by category of portfolio loans (excluding accretable purchase accounting adjustments and clearings) (dollars in thousands):


		December 31, 2019
								Special						Substandard
		Pass			Watch			Mention			Substandard			Non-accrual
Commercial		$	1,458,416		$	172,526		$	66,337		$	41,273		$	9,096
Commercial real estate			2,477,398			186,963			105,487			26,204			9,178
Real estate construction			351,923			45,262			3,928			737			630
Retail real estate			1,661,691			9,125			5,355			7,001			8,935
Retail other			47,698			—			—			—			57
Total		$	5,997,126		$	413,876		$	181,107		$	75,215		$	27,896


		December 31, 2018
								Special						Substandard
		Pass			Watch			Mention			Substandard			Non-accrual
Commercial		$	1,126,257		$	172,449		$	47,000		$	42,532		$	17,953
Commercial real estate			2,106,711			137,214			85,148			36,205			10,298
Real estate construction			268,069			14,562			3,899			1,888			18
Retail real estate			1,448,964			6,425			6,792			5,435			6,698
Retail other			26,707			—			—			—			30
Total		$	4,976,708		$	330,650		$	142,839		$	86,060		$	34,997

Summary of portfolio loans that are past due and still accruing or on a non-accrual status

An analysis of portfolio loans that are past due and still accruing or on a non-accrual status is as follows (dollars in thousands):


		December 31, 2019
		Loans past due, still accruing									Non-accrual
		30-59 Days			60-89 Days			90+Days			Loans
Commercial		$	1,075		$	1,014		$	199		$	9,096
Commercial real estate			2,653			3,121			584			9,178
Real estate construction			19			—			—			630
Retail real estate			5,021			1,248			828			8,935
Retail other			52			68			—			57
Total		$	8,820		$	5,451		$	1,611		$	27,896


		December 31, 2018
		Loans past due, still accruing									Non-accrual
		30-59 Days			60-89 Days			90+Days			Loans
Commercial		$	158		$	140		$	775		$	17,953
Commercial real estate			148			558			—			10,298
Real estate construction			121			—			58			18
Retail real estate			4,578			1,368			766			6,698
Retail other			48			2			2			30
Total		$	5,053		$	2,068		$	1,601		$	34,997

Summary of restructured loans

A summary of TDR loans is as follows (dollars in thousands):


		December 31,
		2019			2018
In compliance with modified terms		$	5,005		$	8,319
30 — 89 days past due			—			127
Included in non-performing loans			702			392
Total		$	5,707		$	8,838

Schedule of details of impaired loans, segregated by category

The following tables provide details of loans identified as impaired, segregated by category. The unpaid contractual principal balance represents the recorded balance prior to any partial charge-offs. The recorded investment represents customer balances net of any partial charge-offs recognized on the loan. The average recorded investment is calculated using the most recent four quarters (dollars in thousands).


		December 31, 2019
		Unpaid			Recorded
		Contractual			Investment			Recorded			Total						Average
		Principal			with No			Investment			Recorded			Related			Recorded
		Balance			Allowance			with Allowance			Investment			Allowance			Investment
Commercial		$	14,415		$	4,727		$	5,026		$	9,753		$	3,330		$	13,774
Commercial real estate			14,487			9,883			2,039			11,922			1,049			16,678
Real estate construction			1,116			974			—			974			—			873
Retail real estate			15,581			13,898			474			14,372			474			14,003
Retail other			87			58			—			58			—			42
Total		$	45,686		$	29,540		$	7,539		$	37,079		$	4,853		$	45,370


		December 31, 2018
		Unpaid			Recorded
		Contractual			Investment			Recorded			Total						Average
		Principal			with No			Investment			Recorded			Related			Recorded
		Balance			Allowance			with Allowance			Investment			Allowance			Investment
Commercial		$	21,442		$	6,858		$	12,001		$	18,859		$	4,319		$	13,364
Commercial real estate			19,079			13,082			4,498			17,580			1,181			18,077
Real estate construction			478			453			—			453			—			712
Retail real estate			14,418			13,196			61			13,257			61			14,110
Retail other			117			33			—			33			—			40
Total		$	55,534		$	33,622		$	16,560		$	50,182		$	5,561		$	46,303

Schedule of activity on the allowance for loan losses


		Year Ended December 31, 2018
					Commercial			Real Estate			Retail Real
		Commercial			Real Estate			Construction			Estate			Retail Other			Total
Beginning balance		$	14,779		$	21,813		$	2,861		$	13,783		$	346		$	53,582
Provision for loan losses			5,767			3,227			(259)			(4,824)			518			4,429
Charged-off			(3,968)			(4,352)			(97)			(1,815)			(712)			(10,944)
Recoveries			1,251			449			218			1,327			336			3,581
Ending balance		$	17,829		$	21,137		$	2,723		$	8,471		$	488		$	50,648


		Year Ended December 31, 2017
					Commercial			Real Estate			Retail Real
		Commercial			Real Estate			Construction			Estate			Retail Other			Total
Beginning balance		$	13,303		$	20,623		$	1,870		$	11,648		$	351		$	47,795
Provision for loan losses			(1,091)			2,439			581			3,263			111			5,303
Charged-off			(994)			(1,965)			(48)			(2,691)			(541)			(6,239)
Recoveries			3,561			716			458			1,563			425			6,723
Ending balance		$	14,779		$	21,813		$	2,861		$	13,783		$	346		$	53,582

Schedule of allowance for loan losses and recorded investments in portfolio loans, by category

The following table presents the allowance for loan losses and recorded investments in portfolio loans by category (dollars in thousands):


		As of December 31, 2019
					Commercial			Real Estate			Retail Real
		Commercial			Real Estate			Construction			Estate			Retail Other			Total
Allowance for loan losses
Ending balance attributed to:
Loans individually evaluated for impairment		$	3,330		$	1,049		$	—		$	474		$	—		$	4,853
Loans collectively evaluated for impairment			14,961			20,141			3,204			10,021			568			48,895
Ending balance		$	18,291		$	21,190		$	3,204		$	10,495		$	568		$	53,748

Loans:
Loans individually evaluated for impairment		$	9,740		$	10,018		$	539		$	13,676		$	58		$	34,031
Loans collectively evaluated for impairment			1,738,615			2,781,495			400,887			1,679,397			49,776			6,650,170
PCI loans evaluated for impairment			13			1,904			435			696			—			3,048
Ending balance		$	1,748,368		$	2,793,417		$	401,861		$	1,693,769		$	49,834		$	6,687,249


		As of December 31, 2018
					Commercial			Real Estate			Retail Real
		Commercial			Real Estate			Construction			Estate			Retail Other			Total
Allowance for loan losses
Ending balance attributed to:
Loans individually evaluated for impairment		$	4,319		$	1,181		$	—		$	61		$	—		$	5,561
Loans collectively evaluated for impairment			13,510			19,956			2,723			8,410			488			45,087
Ending balance		$	17,829		$	21,137		$	2,723		$	8,471		$	488		$	50,648

Loans:
Loans individually evaluated for impairment		$	18,441		$	15,318		$	453		$	13,159		$	33		$	47,404
Loans collectively evaluated for impairment			1,386,247			2,349,243			287,744			1,466,876			28,136			5,518,246
PCI loans evaluated for impairment			418			2,262			—			98			—			2,778
Ending balance		$	1,405,106		$	2,366,823		$	288,197		$	1,480,133		$	28,169		$	5,568,428