Loans - (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Loan Portfolio Composition Including Carrying Value by Segment of Loans Accounted for under ASC Topic 310-30 and Loans Covered by the FDIC Loss Sharing Agreements

At December 31, 2016, $14.4 million of non 310-30 loans were held-for-sale, most of which were in the residential real estate segment.

	December 31, 2016
	ASC 310-30 loans		Non 310-30 loans		Total loans		% of total
Commercial	$	39,280	$	1,521,150	$	1,560,430	54.6%
Commercial real estate non-owner occupied		89,150		437,642		526,792	18.4%
Residential real estate		16,524		728,361		744,885	26.0%
Consumer		898		27,916		28,814	1.0%
Total	$	145,852	$	2,715,069	$	2,860,921	100.0%

	December 31, 2015
	ASC 310-30 loans		Non 310-30 loans		Total loans		% of total
Commercial	$	57,474	$	1,369,946	$	1,427,420	55.2%
Commercial real estate non-owner occupied		121,173		321,712		442,885	17.1%
Residential real estate		21,452		662,550		684,002	26.4%
Consumer		2,731		30,635		33,366	1.3%
Total	$	202,830	$	2,384,843	$	2,587,673	100.0%

Past Due Financing Receivables

Delinquency for loans excluded from ASC 310-30 is shown in the following tables at December 31, 2016 and 2015:

	December 31, 2016
					Greater						Total		Loans > 90
	30-59		60-89		than 90						non		days past
	days  past		days past		days past		Total  past				310-30		due and		Non-
	due		due		due		due		Current		loans		still accruing		accrual
Loans excluded from ASC 310-30:
Commercial:
Commercial and industrial	$	3,134	$	4,009	$	1,078	$	8,221	$	1,066,475	$	1,074,696	$	—	$	8,688
Owner occupied commercial real estate		583		216		56		855		220,689		221,544		—		2,056
Agriculture		501		—		—		501		134,136		134,637		—		1,905
Energy		2		—		6,548		6,550		83,723		90,273		—		12,645
Total Commercial		4,220		4,225		7,682		16,127		1,505,023		1,521,150		—		25,294
Commercial real estate non-owner occupied:
Construction		—		—		—		—		90,314		90,314		—		—
Acquisition/development		—		—		—		—		13,306		13,306		—		—
Multifamily		—		—		—		—		24,954		24,954		—		—
Non-owner occupied		—		—		28		28		309,040		309,068		—		66
Total commercial real estate		—		—		28		28		437,614		437,642		—		66
Residential real estate:
Senior lien		888		645		1,458		2,991		672,699		675,690		—		4,522
Junior lien		115		61		22		198		52,473		52,671		—		654
Total residential real estate		1,003		706		1,480		3,189		725,172		728,361		—		5,176
Consumer		83		8		—		91		27,825		27,916		—		181
Total loans excluded from ASC 310-30	$	5,306	$	4,939	$	9,190	$	19,435	$	2,695,634	$	2,715,069	$	—	$	30,717

	December 31, 2015
					Greater						Total		Loans > 90
	30-59		60-89		than 90						non		days past
	days past		days past		days past		Total  past				310-30		due and		Non-
	due		due		due		due		Current		loans		still accruing		accrual
Loans excluded from ASC 310-30:
Commercial:
Commercial and industrial	$	2,252	$	238	$	49	$	2,539	$	890,350	$	892,889	$	—	$	4,830
Owner occupied commercial real estate		370		111		66		547		184,072		184,619		—		1,273
Agriculture		441		58		1,222		1,721		143,837		145,558		—		1,984
Energy		23		5,781		—		5,804		141,076		146,880		—		12,008
Total Commercial		3,086		6,188		1,337		10,611		1,359,335		1,369,946		—		20,095
Commercial real estate non-owner occupied:
Construction		359		188		—		547		29,596		30,143		—		188
Acquisition/development		—		—		—		—		5,575		5,575		—		—
Multifamily		—		38		22		60		9,813		9,873		—		22
Non-owner occupied		2,340		182		968		3,490		272,631		276,121		—		1,013
Total commercial real estate		2,699		408		990		4,097		317,615		321,712		—		1,223
Residential real estate:
Senior lien		1,909		911		1,481		4,301		610,192		614,493		124		3,713
Junior lien		299		237		194		730		47,327		48,057		6		584
Total residential real estate		2,208		1,148		1,675		5,031		657,519		662,550		130		4,297
Consumer		239		26		38		303		30,332		30,635		36		32
Total loans excluded from ASC 310-30	$	8,232	$	7,770	$	4,040	$	20,042	$	2,364,801	$	2,384,843	$	166	$	25,647

Credit Exposure for Loans as Determined by Company's Internal Risk Rating System

Credit exposure for all loans as determined by the Company’s internal risk rating system was as follows at December 31, 2016 and 2015:

	December 31, 2016
			Special
	Pass		mention		Substandard		Doubtful		Total
Loans excluded from ASC 310-30:
Commercial:
Commercial and industrial	$	1,041,326	$	7,243	$	25,636	$	491	$	1,074,696
Owner occupied commercial real estate		202,036		9,371		10,137		—		221,544
Agriculture		123,809		8,922		1,906		—		134,637
Energy		77,619		—		7,811		4,843		90,273
Total Commercial		1,444,790		25,536		45,490		5,334		1,521,150
Commercial real estate non-owner occupied:
Construction		90,099		—		215		—		90,314
Acquisition/development		10,758		2,548		—		—		13,306
Multifamily		22,495		238		2,221		—		24,954
Non-owner occupied		300,922		5,895		2,251		—		309,068
Total commercial real estate		424,274		8,681		4,687		—		437,642
Residential real estate:
Senior lien		669,148		1,215		5,316		11		675,690
Junior lien		51,250		178		1,243		—		52,671
Total residential real estate		720,398		1,393		6,559		11		728,361
Consumer		27,669		59		188		—		27,916
Total loans excluded from ASC 310-30	$	2,617,131	$	35,669	$	56,924	$	5,345	$	2,715,069
Loans accounted for under ASC 310-30:
Commercial	$	27,436	$	610	$	11,234	$	—	$	39,280
Commercial real estate non-owner occupied		38,895		967		45,520		3,768		89,150
Residential real estate		12,477		1,327		2,720		—		16,524
Consumer		721		17		160		—		898
Total loans accounted for under ASC 310-30	$	79,529	$	2,921	$	59,634	$	3,768	$	145,852
Total loans	$	2,696,660	$	38,590	$	116,558	$	9,113	$	2,860,921

	December 31, 2015
			Special
	Pass		mention		Substandard		Doubtful		Total
Loans excluded from ASC 310-30:
Commercial:
Commercial and industrial	$	865,840	$	8,363	$	16,769	$	1,917	$	892,889
Owner occupied commercial real estate		174,108		5,595		4,916		—		184,619
Agriculture		132,450		2,440		10,668		—		145,558
Energy		92,152		36,503		16,098		2,127		146,880
Total Commercial		1,264,550		52,901		48,451		4,044		1,369,946
Commercial real estate non-owner occupied:
Construction		24,686		4,882		575		—		30,143
Acquisition/development		5,066		509		—		—		5,575
Multifamily		9,851		—		22		—		9,873
Non-owner occupied		262,035		8,091		5,722		273		276,121
Total commercial real estate		301,638		13,482		6,319		273		321,712
Residential real estate:
Senior lien		609,196		349		4,921		27		614,493
Junior lien		46,437		252		1,368		—		48,057
Total residential real estate		655,633		601		6,289		27		662,550
Consumer		30,483		67		85		—		30,635
Total loans excluded from ASC 310-30	$	2,252,304	$	67,051	$	61,144	$	4,344	$	2,384,843
Loans accounted for under ASC 310-30:
Commercial	$	35,384	$	787	$	21,303	$	—	$	57,474
Commercial real estate non-owner occupied		49,817		352		67,235		3,769		121,173
Residential real estate		16,960		1,604		2,888		—		21,452
Consumer		2,296		94		341		—		2,731
Total loans accounted for under ASC 310-30	$	104,457	$	2,837	$	91,767	$	3,769	$	202,830
Total loans	$	2,356,761	$	69,888	$	152,911	$	8,113	$	2,587,673

Schedule Of Impaired Financing Receivable With And Without Related Allowance

Additional information regarding impaired loans at December 31, 2016 and 2015 is set forth in the table below:

	December 31, 2016						December 31, 2015
					Allowance						Allowance
	Unpaid				for loan		Unpaid				for loan
	principal		Recorded		losses		principal		Recorded		losses
	balance		investment		allocated		balance		investment		allocated
With no related allowance recorded:
Commercial:
Commercial and industrial	$	8,671	$	7,495	$	—	$	4,997	$	4,995	$	—
Owner occupied commercial real estate		3,350		3,197		—		2,218		2,150		—
Agriculture		2,044		1,987		—		1,877		1,878		—
Energy		17,142		6,105		—		5,815		5,749		—
Total commercial		31,207		18,784		—		14,907		14,772		—
Commercial real estate non-owner occupied:
Construction		—		—		—		190		188		—
Acquisition/development		—		—		—		—		—		—
Multifamily		33		33		—		—		—		—
Non-owner occupied		394		343		—		154		153		—
Total commercial real estate		427		376		—		344		341		—
Residential real estate:
Senior lien		1,551		1,426		—		947		941		—
Junior lien		54		51		—		113		112		—
Total residential real estate		1,605		1,477		—		1,060		1,052		—
Consumer		4		4		—		—		—		—
Total impaired loans with no related allowance recorded	$	33,243	$	20,641	$	—	$	16,311	$	16,165	$	—
With a related allowance recorded:
Commercial:
Commercial and industrial	$	3,495	$	3,464	$	492	$	4,537	$	4,503	$	1,918
Owner occupied commercial real estate		957		642		2		1,272		1,117		2
Agriculture		—		—		—		254		248		1
Energy		11,216		6,548		1,866		6,279		6,260		2,127
Total commercial		15,668		10,654		2,360		12,342		12,128		4,048
Commercial real estate non-owner occupied:
Construction		—		—		—		—		—		—
Acquisition/development		—		—		—		—		—		—
Multifamily		—		—		—		61		59		—
Non-owner occupied		261		255		1		1,642		1,630		274
Total commercial real estate		261		255		1		1,703		1,689		274
Residential real estate:
Senior lien		5,646		5,016		31		5,827		5,701		54
Junior lien		1,781		1,532		14		1,800		1,593		11
Total residential real estate		7,427		6,548		45		7,627		7,294		65
Consumer		188		184		2		86		86		1
Total impaired loans with a related allowance recorded	$	23,544	$	17,641	$	2,408	$	21,758	$	21,198	$	4,388
Total impaired loans	$	56,787	$	38,282	$	2,408	$	38,069	$	37,363	$	4,388

Schedule of Impaired Financing Receivable, Average Recorded Investment and Interest Income Recognized

The table below shows additional information regarding the average recorded investment and interest income recognized on impaired loans for the periods presented:

	For the years ended
	December 31, 2016				December 31, 2015				December 31, 2014
	Average recorded investment		Interest income recognized		Average recorded investment		Interest income recognized		Average recorded investment		Interest income recognized
With no related allowance recorded:
Commercial:
Commercial and industrial	$	7,909	$	252	$	5,049	$	266	$	21,827	$	414
Owner occupied commercial real estate		3,249		92		2,221		83		1,018		51
Agriculture		1,830		—		1,961		—		3,458		126
Energy		12,565		—		5,679		—		—		—
Total Commercial		25,553		344		14,910		349		26,303		591
Commercial real estate non-owner occupied:
Construction		—		—		188		—		—		—
Acquisition/development		—		—		—		—		—		—
Multifamily		—		—		—		—		—		—
Non-owner occupied		368		22		157		—		—		—
Total commercial real estate		368		22		345		—		—		—
Residential real estate:
Senior lien		1,466		19		956		15		605		7
Junior lien		54		2		113		—		—		—
Total residential real estate		1,520		21		1,069		15		605		7
Consumer		4		—		—		—		—		—
Total impaired loans with no related allowance recorded	$	27,445	$	387	$	16,324	$	363	$	26,908	$	598
With a related allowance recorded:
Commercial:
Commercial and industrial	$	3,545	$	198	$	6,273	$	1	$	893	$	7
Owner occupied commercial real estate		703		20		1,230		27		1,166		40
Agriculture		162		5		276		4		158		—
Energy		10,008		—		3,092		—		—		—
Total Commercial		14,418		223		10,871		32		2,217		47
Commercial real estate non-owner occupied:
Construction		—		—		—		—		—		—
Acquisition/development		—		—		—		—		—		—
Multifamily		34		2		60		1		—		—
Non-owner occupied		268		13		1,667		48		1,095		56
Total commercial real estate		302		15		1,727		49		1,095		56
Residential real estate:
Senior lien		5,200		88		5,911		119		6,594		101
Junior lien		1,600		56		1,725		51		1,568		60
Total residential real estate		6,800		144		7,636		170		8,162		161
Consumer		196		—		92		1		265		1
Total impaired loans with a related allowance recorded	$	21,716	$	382	$	20,326	$	252	$	11,739	$	265
Total impaired loans	$	49,161	$	769	$	36,650	$	615	$	38,647	$	863

Additional Information Related to Accruing TDR's

The table below provides additional information related to accruing TDRs at December 31, 2016 and 2015:

	December 31, 2016
	Recorded		Average year-to-date		Unpaid		Unfunded commitments
	investment		recorded investments		principal balance		to fund TDRs
Commercial	$	3,302	$	3,440	$	3,464	$	100
Commercial real estate non-owner occupied		538		572		590		—
Residential real estate		1,920		1,996		1,969		2
Consumer		7		9		7		—
Total	$	5,767	$	6,017	$	6,030	$	102

	December 31, 2015
	Recorded		Average year-to-date		Unpaid		Unfunded commitments
	investment		recorded investments		principal balance		to fund TDRs
Commercial	$	5,874	$	5,951	$	5,918	$	163
Commercial real estate non-owner occupied		388		394		389		—
Residential real estate		2,162		2,234		2,166		2
Consumer		12		15		12		—
Total	$	8,436	$	8,594	$	8,485	$	165

Summary of Company's Carrying Value of Non-Accrual TDR's

The following table summarizes the Company’s carrying value of non-accrual TDRs as of December 31, 2016 and 2015:

	December 31, 2016		December 31, 2015
Commercial	$	15,265	$	16,297
Commercial real estate non-owner occupied		—		816
Residential real estate		1,301		678
Consumer		142		2
Total non-accruing TDRs	$	16,708	$	17,793

Re-Measurement of Loans Accounted for Under ASC Topic 310-30 Resulting in Changes in Carrying Amount of Accretable Yield

The re-measurement of loans accounted for under ASC 310-30 resulted in the following changes in the carrying amount of accretable yield during 2016 and 2015:

	December 31, 2016		December 31, 2015
Accretable yield beginning balance	$	84,194	$	113,463
Reclassification from non-accretable difference		14,316		22,392
Reclassification to non-accretable difference		(4,778)		(4,387)
Accretion		(33,256)		(47,274)
Accretable yield ending balance	$	60,476	$	84,194

Composition of Net Book Value for Loans Accounted for under ASC Topic 310-30

Below is the composition of the net book value for loans accounted for under ASC 310-30 at December 31, 2016 and 2015:

	December 31, 2016		December 31, 2015
Contractual cash flows	$	537,611	$	627,843
Non-accretable difference		(331,283)		(340,819)
Accretable yield		(60,476)		(84,194)
Loans accounted for under ASC 310-30	$	145,852	$	202,830