Allowance for Loan Losses (Tables)

12 Months Ended

Dec. 31, 2017

Receivables [Abstract]

Summary of Activity in Allowance for Loan Losses, and Ending Balance of Loans, Net of Unearned Fees for Periods Indicated

The following tables summarize the activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.

	Allowance for Loan Losses - Year Ended December 31, 2017
	RE Mortgage						Home Equity						Auto		Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Indirect		Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,748		$	11,517		$	7,044		$	2,644			—	$	622		$	5,831		$	1,417		$	680		$	32,503
Charge-offs		(60	)		(186	)		(98	)		(332	)		—		(1,186	)		(1,444	)		(1,104	)		—			(4,410	)
Recoveries		—			397			698			242			—		375			428			—			1			2,141
(Benefit) provision		(371	)		(287	)		(1,844	)		(713	)		—		775			1,697			871			(39	)		89
Ending balance	$	2,317		$	11,441		$	5,800		$	1,841			—	$	586		$	6,512		$	1,184		$	642		$	30,323
Ending balance:
Individ. evaluated for impairment	$	230		$	30		$	427		$	107			—	$	57		$	1,848			—			—		$	2,699
Loans pooled for evaluation	$	1,932		$	11,351		$	5,356		$	1,734			—	$	529		$	4,624		$	1,184		$	642		$	27,352
Loans acquired with deteriorated credit quality	$	155		$	60		$	17			—			—		—		$	40			—			—		$	272
	Loans, net of unearned fees – As of December 31, 2017
	RE Mortgage						Home Equity						Auto		Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Indirect		Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	385,426		$	1,914,896		$	288,688		$	43,031			—	$	25,155		$	220,412		$	67,930		$	69,627		$	3,015,165
Individ. evaluated for impairment	$	5,298		$	13,911		$	2,688		$	1,470			—	$	257		$	4,470		$	140			—		$	28,234
Loans pooled for evaluation	$	378,743		$	1,892,422		$	283,502		$	41,076			—	$	24,853		$	213,358		$	67,790		$	69,627		$	2,971,371
Loans acquired with deteriorated credit quality	$	1,385		$	8,563		$	2,498		$	485			—	$	45		$	2,584			—			—		$	15,560
	Allowance for Loan Losses - Year Ended December 31, 2016
	RE Mortgage						Home Equity						Auto		Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Indirect		Consum.			C&I			Resid.			Comm.			Total
Beginning balance	$	2,896		$	11,015		$	11,253		$	3,177			—	$	688		$	5,271		$	899		$	812		$	36,011
Charge-offs		(321	)		(827	)		(585	)		(219	)		—		(823	)		(455	)		—			—			(3,230	)
Recoveries		880			920			2,317			590			—		449			404			54			78			5,692
(Benefit) provision		(707	)		409			(5,941	)		(904	)		—		308			611			464			(210	)		(5,970	)
Ending balance	$	2,748		$	11,517		$	7,044		$	2,644			—	$	622		$	5,831		$	1,417		$	680		$	32,503
Ending balance:
Individ. evaluated for impairment	$	258		$	4		$	411		$	215			—	$	28		$	1,130			—			—		$	2,046
Loans pooled for evaluation	$	2,304		$	10,064		$	6,616		$	2,365			—	$	594		$	3,765		$	1,372		$	680		$	27,760
Loans acquired with deteriorated credit quality	$	186		$	1,449		$	17		$	64			—		—		$	936		$	45			—		$	2,697
	Loans, net of unearned fees – As of December 31, 2016
	RE Mortgage						Home Equity						Auto		Other						Construction
(in thousands)	Resid.			Comm.			Lines			Loans			Indirect		Consum.			C&I			Resid.			Comm.			Total
Ending balance:
Total loans	$	368,343		$	1,685,121		$	289,715		$	46,182			—	$	30,766		$	217,047		$	55,429		$	66,990		$	2,759,593
Individ. evaluated for impairment	$	4,094		$	15,081		$	3,196		$	1,508			—	$	154		$	4,096		$	11			—		$	28,140
Loans pooled for evaluation	$	362,780		$	1,657,238		$	282,159		$	42,992			—	$	30,547		$	208,960		$	54,743		$	66,990		$	2,706,409
Loans acquired with deteriorated credit quality	$	1,469		$	12,802		$	4,360		$	1,682			—	$	65		$	3,991		$	675			—		$	25,044

	Allowance for Loan Losses - Year Ended December 31, 2015
	RE Mortgage					Home Equity						Auto			Other						Construction
(in thousands)	Resid.			Comm.		Lines			Loans			Indirect			Consum.			C&I			Resid.			Comm.		Total
Beginning balance	$	3,086		$	9,227	$	15,676		$	1,797		$	9		$	719		$	4,226		$	1,434		$	411	$	36,585
Charge-offs		(224	)		—		(694	)		(242	)		(4	)		(972	)		(680	)		—			—		(2,816	)
Recoveries		204			243		666			252			42			500			677			1,728			140		4,452
(Benefit) provision		(170	)		1,545		(4,395	)		1,370			(47	)		441			1,048			(2,263	)		261		(2,210	)
Ending balance	$	2,896		$	11,015	$	11,253		$	3,177			—		$	688		$	5,271		$	899		$	812	$	36,011
Ending balance:
Individ. evaluated for impairment	$	335		$	396	$	605		$	294			—		$	74		$	1,187			—			—	$	2,891
Loans pooled for evaluation	$	2,501		$	9,167	$	10,423		$	2,883			—		$	614		$	2,983		$	844		$	812	$	30,227
Loans acquired with deteriorated credit quality	$	60		$	1,452	$	225			—			—			—		$	1,101		$	55			—	$	2,893
	Loans, net of unearned fees – As of December 31, 2015
	RE Mortgage					Home Equity						Auto			Other						Construction
(in thousands)	Resid.			Comm.		Lines			Loans			Indirect			Consum.			C&I			Resid.			Comm.		Total
Ending balance:
Total loans	$	314,265		$	1,497,567	$	322,492		$	40,362			—		$	32,429		$	194,913		$	46,135		$	74,774	$	2,522,937
Individ. evaluated for impairment	$	6,767		$	32,407	$	5,747		$	1,731			—		$	288		$	2,671		$	4		$	490	$	50,105
Loans pooled for evaluation	$	305,353		$	1,442,100	$	309,007		$	37,004			—		$	32,077		$	187,393		$	45,410		$	74,284	$	2,432,628
Loans acquired with deteriorated credit quality	$	2,145		$	23,060	$	7,738		$	1,627			—		$	64		$	4,849		$	721			—	$	40,204

Presentation of Credit Quality Indicators

The following tables present ending loan balances by loan category and risk grade for the periods indicated:

	Credit Quality Indicators – As of December 31, 2017
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	315,120	$	1,649,333	$	265,345	$	37,428		—	$	22,432	$	195,208	$	67,813	$	64,492	$	2,617,171
Special mention		2,234		18,434		2,558		800		—		272		9,492		—		4,872		38,662
Substandard		3,168		22,743		2,039		1,620		—		155		4,737		107		—		34,569
Loss		—		—		—		—		—		—		—		—		—		—
Total originated	$	320,522	$	1,690,510	$	269,942	$	39,848		—	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
PNCI loans:
Pass	$	61,411	$	203,751	$	14,866	$	2,433		—	$	2,207	$	8,390	$	10	$	263	$	293,331
Special mention		218		11,513		450		188		—		38		1		—		—		12,408
Substandard		1,890		559		932		77		—		6		—		—		—		3,464
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	63,519	$	215,823	$	16,248	$	2,698		—	$	2,251	$	8,391	$	10	$	263	$	309,203
PCI loans	$	1,385	$	8,563	$	2,498	$	485		—	$	45	$	2,584		—		—	$	15,560
Total loans	$	385,426	$	1,914,896	$	288,688	$	43,031		—		25,155	$	220,412	$	67,930	$	69,627	$	3,015,165

	Credit Quality Indicators – As of December 31, 2016
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
Originated loans:
Pass	$	278,635	$	1,399,936	$	258,024	$	37,844		—	$	27,542	$	190,902	$	54,602	$	57,808	$	2,305,293
Special mention		2,992		14,341		2,518		891		—		385		6,133		—		311		27,571
Substandard		2,912		11,551		3,048		2,001		—		240		3,700		11		—		23,463
Loss		—		—		—		—		—		—		—		—		—		—
Total originated	$	284,539	$	1,425,828	$	263,590	$	40,736		—	$	28,167	$	200,735	$	54,613	$	58,119	$	2,356,327
PNCI loans:
Pass	$	79,000	$	233,326	$	20,442	$	3,506		—	$	2,437	$	12,320	$	141	$	8,871	$	360,043
Special mention		1,849		5,925		509		173		—		92		1		—		—		8,549
Substandard		1,486		7,240		814		85		—		5		—		—		—		9,630
Loss		—		—		—		—		—		—		—		—		—		—
Total PNCI	$	82,335	$	246,491	$	21,765	$	3,764		—	$	2,534	$	12,321	$	141	$	8,871	$	378,222
PCI loans	$	1,469	$	12,802	$	4,360	$	1,682		—	$	65	$	3,991	$	675		—	$	25,044
Total loans	$	368,343	$	1,685,121	$	289,715	$	46,182		—	$	30,766	$	217,047	$	55,429	$	66,990	$	2,759,593

Analysis of Past Due and Nonaccrual Loans

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Auto	Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect	Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	1,740	$	158	$	528	$	511	—	$	56	$	956	$	34		—	$	3,983
60-89 Days		510		987		48		107	—		36		738		—		—		2,426
> 90 Days		243		—		372		373	—		3		1,527		—		—		2,518
Total past due	$	2,493	$	1,145	$	948	$	991	—	$	95	$	3,221	$	34		—	$	8,927
Current		318,029		1,689,365		268,994		38,857	—		22,764		206,216		67,886	$	69,364		2,681,475
Total orig. loans	$	320,522	$	1,690,510	$	269,942	$	39,848	—	$	22,859	$	209,437	$	67,920	$	69,364	$	2,690,402
> 90 Days and still accruing		—		—		—		—	—		—		—		—		—		—
Nonaccrual loans	$	1,725	$	8,144	$	811	$	1,106	—	$	7	$	3,669		—		—	$	15,462

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	1,495	$	70	$	298	$	30		—	$	6		—		—		—	$	1,899
60-89 Days		90		—		228		—		—		26		—		—		—		344
> 90 Days		109		—		330		—		—		—		—		—		—		439
Total past due	$	1,694	$	70	$	856	$	30		—	$	32		—		—		—	$	2,682
Current		61,825		215,753		15,392		2,668		—		2,219	$	8,391	$	10	$	263		306,521
Total PNCI loans	$	63,519	$	215,823	$	16,248	$	2,698		—	$	2,251	$	8,391	$	10	$	263	$	309,203
> 90 Days and still accruing	$	81		—	$	200		—		—		—		—		—		—	$	281
Nonaccrual loans	$	1,012		—	$	402	$	44		—	$	5		—		—		—	$	1,463

The following table shows the ending balance of current, past due, and nonaccrual originated loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual Originated Loans – As of December 31, 2016
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
Originated loan balance:
Past due:
30-59 Days	$	552	$	317	$	754	$	646		—	$	16	$	1,148	$	921		—	$	4,354
60-89 Days		269		1,387		—		395		—		30		84		—	$	421		2,586
> 90 Days		—		216		687		184		—		15		634		11		—		1,747
Total past due	$	821	$	1,920	$	1,441	$	1,225		—	$	61	$	1,866	$	932	$	421	$	8,687
Current		283,718		1,423,908		262,149		39,511		—		28,106		198,869		53,681		57,698		2,347,640
Total orig. loans	$	284,539	$	1,425,828	$	263,590	$	40,736		—	$	28,167	$	200,735	$	54,613	$	58,119	$	2,356,327
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	255	$	7,651	$	1,211	$	803		—	$	33	$	2,930	$	11		—	$	12,894

The following table shows the ending balance of current, past due, and nonaccrual PNCI loans by loan category as of the date indicated:

	Analysis of Past Due and Nonaccrual PNCI Loans – As of December 31, 2016
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
PNCI loan balance:
Past due:
30-59 Days	$	1,510	$	73	$	274	$	39		—		—		—		—		—	$	1,896
60-89 Days		—		—		—		—		—		—		—		—		—		—
> 90 Days		21		81		589		13		—		—		—		—		—		704
Total past due	$	1,531	$	154	$	863	$	52		—		—		—		—		—	$	2,600
Current		80,804		246,337		20,902		3,712		—	$	2,534	$	12,321	$	141	$	8,871		375,622
Total PNCI loans	$	82,335	$	246,491	$	21,765	$	3,764		—	$	2,534	$	12,321	$	141	$	8,871	$	378,222
> 90 Days and still accruing		—		—		—		—		—		—		—		—		—		—
Nonaccrual loans	$	194	$	1,826	$	742	$	67		—	$	5		—		—		—	$	2,834

Impaired Loans

Impaired originated loans are those where management has concluded that it is probable that the borrower will be unable to pay all amounts due under the contractual terms. The following tables show the recorded investment (financial statement balance), unpaid principal balance, average recorded investment, and interest income recognized for impaired Originated and PNCI loans, segregated by those with no related allowance recorded and those with an allowance recorded for the periods indicated.

	Impaired Originated Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	2,058	$	13,101	$	1,093	$	1,107		—	$	4	$	575	$	140		—	$	18,078
Unpaid principal	$	2,109	$	13,360	$	1,175	$	1,429		—	$	52	$	585	$	140		—	$	18,850
Average recorded Investment	$	1,875	$	13,123	$	1,287	$	852		—	$	10	$	668	$	76		—	$	17,891
Interest income Recognized	$	85	$	609	$	39	$	14		—		—	$	18	$	9		—	$	774
With an allowance recorded:
Recorded investment	$	1,881	$	810	$	401	$	198		—	$	3	$	3,895		—		—	$	7,188
Unpaid principal	$	1,914	$	826	$	406	$	198		—	$	3	$	3,981		—		—	$	7,328
Related allowance	$	230	$	30	$	111	$	10		—	$	3	$	1,848		—		—	$	2,232
Average recorded Investment	$	1,626	$	728	$	415	$	341		—	$	10	$	3,615		—		—	$	6,735
Interest income Recognized	$	58	$	36	$	8	$	10		—		—	$	166		—		—	$	278

	Impaired PNCI Loans – As of December 31, 2017
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,359		—	$	591	$	44		—		—		—		—		—	$	1,994
Unpaid principal	$	1,404		—	$	612	$	57		—		—		—		—		—	$	2,073
Average recorded Investment	$	911	$	913	$	663	$	56		—	$	2		—		—		—	$	2,545
Interest income Recognized	$	24		—	$	22		—		—		—		—		—		—	$	46
With an allowance recorded:
Recorded investment		—		—	$	603	$	121		—	$	250		—		—		—	$	974
Unpaid principal		—		—	$	604	$	121		—	$	250		—		—		—	$	975
Related allowance		—		—	$	316	$	97		—	$	54		—		—		—	$	467
Average recorded Investment	$	130	$	66	$	577	$	61		—	$	184		—		—		—	$	1,018
Interest income Recognized		—		—	$	26	$	6		—	$	11		—		—		—	$	43
	Impaired Originated Loans – As of December 31, 2016
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	1,820	$	12,898	$	1,480	$	715		—	$	15	$	762	$	11		—	$	17,701
Unpaid principal	$	1,829	$	13,145	$	1,561	$	1,135		—	$	29	$	926	$	16		—	$	18,641
Average recorded Investment	$	2,853	$	20,003	$	2,221	$	831	$	1	$	16	$	669	$	7		—	$	26,601
Interest income Recognized	$	92	$	570	$	40	$	6		—	$	1	$	48		—		—	$	757
With an allowance recorded:
Recorded investment	$	1,551	$	357	$	430	$	594		—	$	19	$	3,334		—		—	$	6,285
Unpaid principal	$	1,552	$	358	$	440	$	595		—	$	19	$	3,385		—		—	$	6,349
Related allowance	$	180	$	4	$	110	$	107		—	$	13	$	1,130		—		—	$	1,544
Average recorded Investment	$	1,779	$	888	$	1,076	$	634		—	$	9	$	2,714		—		—	$	7,100
Interest income Recognized	$	65	$	22	$	9	$	31		—	$	2	$	77		—		—	$	206
	Impaired PNCI Loans – As of December 31, 2016
	RE Mortgage				Home Equity				Auto		Other				Construction
(in thousands)	Resid.		Comm.		Lines		Loans		Indirect		Consum.		C&I		Resid.		Comm.		Total
With no related allowance recorded:
Recorded investment	$	463	$	1,826	$	735	$	67		—	$	3		—		—		—	$	3,094
Unpaid principal	$	486	$	2,031	$	746	$	74		—	$	4		—		—		—	$	3,341
Average recorded Investment	$	669	$	1,479	$	594	$	69		—	$	18	$	1		—	$	245	$	3,075
Interest income Recognized	$	7		—	$	9	$	1		—		—		—		—		—	$	17
With an allowance recorded:
Recorded investment	$	259		—	$	551	$	132		—	$	118		—		—		—	$	1,060
Unpaid principal	$	259		—	$	551	$	132		—	$	118		—		—		—	$	1,060
Related allowance	$	79		—	$	300	$	108		—	$	15		—		—		—	$	502
Average recorded Investment	$	130	$	1,374	$	579	$	85		—	$	176		—		—		—	$	2,344
Interest income Recognized	$	10		—	$	27	$	7		—	$	5		—		—		—	$	49

Troubled Debt Restructurings

The following tables show certain information regarding Troubled Debt Restructurings (TDRs) that occurred during the periods indicated:

	TDR Information for the Year Ended December 31, 2017
	RE Mortgage					Home Equity						Auto		Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans			Indirect		Consum.		C&I		Resid.		Comm.		Total
Number		1		8			3			1			—		1		11		1		—		26
Pre-mod outstanding principal balance	$	939	$	3,721		$	187		$	252			—	$	14	$	1,854	$	144		—	$	7,111
Post-mod outstanding principal balance	$	939	$	3,695		$	187		$	252			—	$	14	$	1,747	$	144		—	$	6,978
Financial impact due to
TDR taken as additional provision	$	169	$	(111	)	$	27			—			—	$	11	$	37		—		—	$	133
Number that defaulted during the period		2		1			1			1			—		—		—		—		—		5
Recorded investment of TDRs that subsequently defaulted during the 12 month period after modification	$	223	$	219		$	127		$	55			—		—		—		—		—	$	624
Financial impact due to the default of previous
TDR taken as charge-offs or additional provisions		—		—		$	(5	)		—			—		—		—		—		—	$	(5	)
	TDR Information for the Year Ended December 31, 2016
	RE Mortgage					Home Equity						Auto		Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans			Indirect		Consum.		C&I		Resid.		Comm.		Total
Number		3		5			9			1			—		2		4		—		—		24
Pre-mod outstanding principal balance	$	650	$	423		$	707		$	105			—	$	27	$	77		—		—	$	1,989
Post-mod outstanding principal balance	$	656	$	461		$	709		$	105			—	$	27	$	77		—		—	$	2,035
Financial impact due to
TDR taken as additional provision	$	50	$	46		$	205			—			—	$	2	$	23		—		—	$	326
Number that defaulted during the period		2		—			1			—			—		—		—		—		—		3
Recorded investment of TDRs that subsequently defaulted during the 12 month period after modification	$	101		—		$	229			—			—		—		—		—		—	$	330
Financial impact due to the default of previous
TDR taken as charge-offs or additional provisions		—		—			—			—			—		—		—		—		—		—
	TDR Information for the Year Ended December 31, 2015
	RE Mortgage					Home Equity						Auto		Other				Construction
(dollars in thousands)	Resid.		Comm.			Lines			Loans			Indirect		Consum.		C&I		Resid.		Comm.		Total
Number		4		5			2			2			—		2		8		—		—		23
Pre-mod outstanding principal balance	$	800	$	1,518		$	301		$	315			—	$	89	$	956		—		—	$	3,979
Post-mod outstanding principal balance	$	801	$	1,517		$	301		$	321			—	$	89	$	944		—		—	$	3,973
Financial impact due to TDR taken as additional provision	$	8	$	(5	)		—		$	38				$	5	$	405		—		—	$	451
Number that defaulted during the period		4		2			3			1			—		—		—		—		—		10
Recorded investment of TDRs that subsequently defaulted during the 12 month period after modification	$	221	$	280		$	182		$	53			—		—		—		—		—	$	736
Financial impact due to the default of previous TDR taken as charge-offs or additional provisions		—		—			—		$	(9	)		—		—		—		—		—	$	(9	)