Note 6 - Loans Acquired (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Carrying Value Of All Acquired Impaired Loans [Table Text Block]

	Loans Acquired At December 31,
(In thousands)	2017		2016
Consumer:
Other consumer	$	51,467	$	49,677
Total consumer		51,467		49,677
Real estate:
Construction		637,032		57,587
Single family residential		793,228		423,176
Other commercial		2,387,777		690,108
Total real estate		3,818,037		1,170,871
Commercial:
Commercial		995,587		81,837
Agricultural		66,576		3,298
Total commercial		1,062,163		85,135
Other		142,409		--
Total loans acquired (1)	$	5,074,076	$	1,305,683

Schedule of Financing Receivables, Non Accrual Status [Table Text Block]

(In thousands)	2017		2016
Consumer:
Credit cards	$	170	$	373
Other consumer		4,605		1,793
Total consumer		4,775		2,166
Real estate:
Construction		2,242		3,411
Single family residential		13,431		12,139
Other commercial		16,054		12,385
Total real estate		31,727		27,935
Commercial:
Commercial		6,980		7,765
Agricultural		2,160		1,238
Total commercial		9,140		9,003
Total	$	45,642	$	39,104

Past Due Financing Receivables [Table Text Block]

(In thousands)	Gross 30-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Total Loans		90 Days Past Due & Accruing
December 31, 2017
Consumer:
Credit cards	$	707	$	672	$	1,379	$	184,043	$	185,422	$	332
Other consumer		5,009		3,298		8,307		271,787		280,094		10
Total consumer		5,716		3,970		9,686		455,830		465,516		342
Real estate:
Construction		411		1,210		1,621		612,534		614,155		--
Single family residential		8,071		6,460		14,531		1,080,102		1,094,633		1
Other commercial		2,388		8,031		10,419		2,520,405		2,530,824		--
Total real estate		10,870		15,701		26,571		4,213,041		4,239,612		1
Commercial:
Commercial		1,523		6,125		7,648		817,569		825,217		--
Agricultural		50		2,120		2,170		146,132		148,302
Total commercial		1,573		8,245		9,818		963,701		973,519		--
Other		--		--		--		26,962		26,962		--
Total	$	18,159	$	27,916	$	46,075	$	5,659,534	$	5,705,609	$	343
December 31, 2016
Consumer:
Credit cards	$	716	$	275	$	991	$	183,600	$	184,591	$	275
Other consumer		3,786		1,027		4,813		299,159		303,972		11
Total consumer		4,502		1,302		5,804		482,759		488,563		286
Real estate:
Construction		1,420		1,246		2,666		334,093		336,759		--
Single family residential		6,310		5,927		12,237		892,008		904,245		14
Other commercial		4,212		6,722		10,934		1,776,141		1,787,075		--
Total real estate		11,942		13,895		25,837		3,002,242		3,028,079		14
Commercial:
Commercial		2,040		5,296		7,336		632,189		639,525		--
Agricultural		121		1,215		1,336		149,042		150,378		--
Total commercial		2,161		6,511		8,672		781,231		789,903		--
Other		--		--		--		20,662		20,662		--
Total	$	18,605	$	21,708	$	40,313	$	4,286,894	$	4,327,207	$	300

Financing Receivable Credit Quality Indicators [Table Text Block]

(In thousands)	Risk Rate 1-4		Risk Rate 5		Risk Rate 6		Risk Rate 7		Risk Rate 8		Total
December 31, 2017
Consumer:
Credit cards	$	184,920	$	--	$	502	$	--	$	--	$	185,422
Other consumer		275,160		--		4,934		--		--		280,094
Total consumer		460,080		--		5,436		--		--		465,516
Real estate:
Construction		603,126		5,795		5,218		16		--		614,155
Single family residential		1,066,902		3,954		23,490		287		--		1,094,633
Other commercial		2,480,293		19,581		30,950		--		--		2,530,824
Total real estate		4,150,321		29,330		59,658		303		--		4,239,612
Commercial:
Commercial		736,377		74,254		14,402		50		134		825,217
Agricultural		146,065		24		2,190		23		--		148,302
Total commercial		882,442		74,278		16,592		73		134		973,519
Other		26,962		--		--		--		--		26,962
Loans acquired		4,782,384		198,314		93,378		--		--		5,074,076
Total	$	10,302,189	$	301,922	$	175,064	$	376	$	134	$	10,779,685

(In thousands)	Risk Rate 1-4		Risk Rate 5		Risk Rate 6		Risk Rate 7		Risk Rate 8		Total
December 31, 2016
Consumer:
Credit cards	$	183,943	$	--	$	648	$	--	$	--	$	184,591
Other consumer		301,632		26		2,314		--		--		303,972
Total consumer		485,575		26		2,962		--		--		488,563
Real estate:
Construction		330,080		98		6,565		16		--		336,759
Single family residential		875,603		4,024		24,460		158		--		904,245
Other commercial		1,738,207		6,874		41,994		--		--		1,787,075
Total real estate		2,943,890		10,996		73,019		174		--		3,028,079
Commercial:
Commercial		616,805		558		22,162		--		--		639,525
Agricultural		148,218		104		2,033		--		23		150,378
Total commercial		765,023		662		24,195		--		23		789,903
Other		20,662		--		--		--		--		20,662
Loans acquired		1,217,886		22,181		64,075		1,541		--		1,305,683
Total	$	5,433,036	$	33,865	$	164,251	$	1,715	$	23	$	5,632,890

Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Table Text Block]

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	2,021,388		$	18,136
Non-accretable difference (expected losses and foregone interest)		--			(6,731	)
Cash flows expected to be collected at acquisition		2,021,388			11,405
Accretable yield		(36,340	)		--
Basis in acquired loans at acquisition	$	1,985,048		$	11,405

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	2,246,212		$	--
Non-accretable difference (expected losses and foregone interest)		--			--
Cash flows expected to be collected at acquisition		2,246,212			--
Accretable yield		(37,834	)		--
Basis in acquired loans at acquisition	$	2,208,378		$	--

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	254,189		$	3,452
Non-accretable difference (expected losses and foregone interest)		--			(990	)
Cash flows expected to be collected at acquisition		254,189			2,462
Accretable yield		(5,002	)		--
Basis in acquired loans at acquisition	$	249,187		$	2,462

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	348,756		$	1,605
Non-accretable difference (expected losses and foregone interest)		--			(848	)
Cash flows expected to be collected at acquisition		348,756			757
Accretable yield		(8,663	)		--
Basis in acquired loans at acquisition	$	340,093		$	757

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	774,777		$	15,716
Non-accretable difference (expected losses and foregone interest)		--			(4,978	)
Cash flows expected to be collected at acquisition		774,777			10,738
Accretable yield		(4,869	)		12
Basis in acquired loans at acquisition	$	769,908		$	10,750

(In thousands)	Not Impaired			Impaired
Contractually required principal and interest at acquisition	$	1,153,255		$	10,143
Non-accretable difference (expected losses and foregone interest)		--			(3,247	)
Cash flows expected to be collected at acquisition		1,153,255			6,896
Accretable yield		(23,712	)		104
Basis in acquired loans at acquisition	$	1,129,543		$	7,000

Tabular Temporal Display Of Adjustments Related To Purchased Covered Impaired Loans [Table Text Block]

(In thousands)	2017		2016		2015
Impact on net interest income	$	4,105	$	3,072	$	19,995
Non-interest income (1)		--		--		(7,719	)
Net impact to pre-tax income		4,105		3,072		12,276
Net impact, net of taxes	$	2,495	$	1,867	$	7,461

Tabular Temporal Display of Accretable Yield [Table Text Block]

(In thousands)	Accretable Yield			Carrying Amount of Loans
Balance, January 1, 2015	$	20,635		$	169,098
Additions		(116	)		17,750
Accretable yield adjustments		6,593			--
Accretion		(21,038	)		21,038
Payments and other reductions, net		(5,120	)		(184,417	)
Balance, December 31, 2015		954			23,469
Additions		19			757
Accretable yield adjustments		5,122			--
Accretion		(4,440	)		4,440
Payments and other reductions, net		--			(10,864	)
Balance, December 31, 2016		1,655			17,802
Additions		--			13,793
Accretable yield adjustments		4,893			--
Accretion		(5,928	)		5,928
Payments and other reductions, net		--			(20,407	)
Balance, December 31, 2017	$	620		$	17,116

Summary Of The Changes In The FDIC True-Up Provision [Table Text Block]

(In thousands)	FDIC True-up Provision
Balance, January 1, 2015	$	8,308
Amortization expense		107
Adjustments related to changes in expected losses		720
Loss share termination agreement		(9,135	)
Balance, December 31, 2015	$	--

Acquired Loans [Member]

Notes Tables

Schedule of Financing Receivables, Non Accrual Status [Table Text Block]

(In thousands)	December 31, 2017		December 31, 2016
Consumer:
Other consumer	$	334	$	456
Total consumer		334		456
Real estate:
Construction		1,767		7,961
Single family residential		12,151		13,366
Other commercial		7,401		22,045
Total real estate		21,319		43,372
Commercial:
Commercial		1,748		2,806
Agricultural		84		198
Total commercial		1,832		3,004
Total	$	23,485	$	46,832

Past Due Financing Receivables [Table Text Block]

(In thousands)	Gross 30-89 Days Past Due		90 Days or More Past Due		Total Past Due		Current		Total Loans		90 Days Past Due & Accruing
December 31, 2017
Consumer:
Other consumer	$	889	$	260	$	1,149	$	50,318	$	51,467	$	108
Total consumer		889		260		1,149		50,318		51,467		108
Real estate:
Construction		2,577		1,448		4,025		633,007		637,032		279
Single family residential		12,936		3,302		16,238		776,990		793,228		126
Other commercial		17,176		5,647		22,823		2,364,954		2,387,777		2,565
Total real estate		32,689		10,397		43,086		3,774,951		3,818,037		2,970
Commercial:
Commercial		2,344		1,039		3,383		992,204		995,587		67
Agricultural		51		--		51		66,525		66,576		--
Total commercial		2,395		1,039		3,434		1,058,729		1,062,163		67
Other		15		--		15		142,394		142,409		--
Total	$	35,988	$	11,696	$	47,684	$	5,026,392	$	5,074,076	$	3,145
December 31, 2016
Consumer:
Other consumer	$	571	$	189	$	760	$	48,917	$	49,677	$	--
Total consumer		571		189		760		48,917		49,677		--
Real estate:
Construction		132		7,332		7,464		50,123		57,587		--
Single family residential		8,358		4,857		13,215		409,961		423,176		11
Other commercial		2,836		10,741		13,577		676,531		690,108		--
Total real estate		11,326		22,930		34,256		1,136,615		1,170,871		11
Commercial:
Commercial		723		2,153		2,876		78,961		81,837		--
Agricultural		48		--		48		3,250		3,298		--
Total commercial		771		2,153		2,924		82,211		85,135		--
Total	$	12,668	$	25,272	$	37,940	$	1,267,743	$	1,305,683	$	11

Financing Receivable Credit Quality Indicators [Table Text Block]

(In thousands)	Risk Rate 1-4		Risk Rate 5		Risk Rate 6		Risk Rate 7		Risk Rate 8		Total
December 31, 2017
Consumer:
Other consumer	$	50,625	$	21	$	821	$	--	$	--	$	51,467
Total consumer
Real estate:
Construction		468,610		166,710		1,712		--		--		637,032
Single family residential		770,954		2,618		19,656		--		--		793,228
Other commercial		2,337,097		15,064		35,616		--		--		2,387,777
Total real estate		3,576,661		184,392		56,984						3,818,037
Commercial:
Commercial		946,322		13,901		35,364		--		--		995,587
Agricultural		66,367		--		209		--		--		66,576
Total commercial		1,012,689		13,901		35,573		--		--		1,062,163
Other		142,409		--		--		--		--		142,409
Total	$	4,782,384	$	198,314	$	93,378	$	--	$	--	$	5,074,076
December 31, 2016
Consumer:
Other consumer	$	48,992	$	14	$	671	$	--	$	--	$	49,677
Total consumer		48,992		14		671		--		--		49,677
Real estate:
Construction		50,704		88		6,795		--		--		57,587
Single family residential		400,553		2,696		18,392		1,535		--		423,176
Other commercial		641,018		17,384		31,706		--		--		690,108
Total real estate		1,092,275		20,168		56,893		1,535		--		1,170,871
Commercial:
Commercial		73,609		1,965		6,257		6		--		81,837
Agricultural		3,010		34		254		--		--		3,298
Total commercial		76,619		1,999		6,511		6		--		85,135
Total	$	1,217,886	$	22,181	$	64,075	$	1,541	$	--	$	1,305,683