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Allowance for Loan Losses (Tables)
12 Months Ended
Dec. 31, 2012
Receivables [Abstract]  
Schedule of Allowance for Loan Losses by Portfolio Segment
The following table presents a summary of changes in the allowance for loan losses by portfolio segment:
Year ended December 31, 2012
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
87,396

$
8,594

$
15,325

$
1,266

$

$
112,581

Provision charged to operating expense
28,651

1,922

10,845

(668
)

40,750

Less loans charged-off
(43,506
)
(5,320
)
(11,990
)
(120
)

(60,936
)
Add back recoveries of loans previously charged-off
3,241

1,945

2,905

25


8,116

Ending balance
$
75,782

$
7,141

$
17,085

$
503

$

$
100,511

 
 
 
 
 
 
 
Individually evaluated for impairment
$
8,350

$

$
1,919

$
28

$

$
10,297

Collectively evaluated for impairment
67,432

7,141

15,166

475


90,214

Ending balance
$
75,782

$
7,141

$
17,085

$
503

$

$
100,511

 
 
 
 
 
 
 
Total loans:
 
 
 
 
 
 
Individually evaluated for impairment
$
123,406

$

$
12,242

$
537

$

$
136,185

Collectively evaluated for impairment
2,660,420

636,794

676,511

113,090

912

4,087,727

Total loans
$
2,783,826

$
636,794

$
688,753

$
113,627

$
912

$
4,223,912

Year ended December 31, 2011
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
84,181

$
9,332

$
25,354

$
1,613

$

$
120,480

Provision charged to operating expense
46,844

3,566

7,959

(218
)

58,151

Less loans charged-off
(45,764
)
(6,043
)
(19,332
)
(142
)

(71,281
)
Add back recoveries of loans previously charged-off
2,135

1,739

1,344

13


5,231

Ending balance
$
87,396

$
8,594

$
15,325

$
1,266

$

$
112,581

 
 
 
 
 
 
 
Individually evaluated for impairment
$
28,023

$

$
4,664

$
151

$

$
32,838

Collectively evaluated for impairment
59,373

8,594

10,661

1,115


79,743

Ending balance
$
87,396

$
8,594

$
15,325

$
1,266

$

$
112,581

 
 
 
 
 
 
 
Total loans:
 
 
 
 
 
 
Individually evaluated for impairment
$
210,199

$

$
19,638

$
759

$

$
230,596

Collectively evaluated for impairment
2,544,495

616,071

673,623

118,951

2,813

3,955,953

Total loans
$
2,754,694

$
616,071

$
693,261

$
119,710

$
2,813

$
4,186,549


Year ended December 31, 2010
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
76,357

$
6,220

$
18,608

$
1,845

$

$
103,030

Provision charged to operating expense
42,163

8,636

16,333

(232
)

66,900

Less loans charged-off
(34,718
)
(7,577
)
(10,023
)
(21
)

(52,339
)
Add back recoveries of loans previously charged-off
379

2,053

436

21


2,889

Ending balance
$
84,181

$
9,332

$
25,354

$
1,613

$

$
120,480

 
 
 
 
 
 
 
Individually evaluated for impairment
$
27,081

$

$
14,892

$
253

$

$
42,226

Collectively evaluated for impairment
57,100

9,332

10,462

1,360


78,254

Ending balance
$
84,181

$
9,332

$
25,354

$
1,613

$

$
120,480

 
 
 
 
 
 
 
Total loans:
 
 
 
 
 
 
Individually evaluated for impairment
$
162,804

$

$
35,522

$
976

$

$
199,302

Collectively evaluated for impairment
2,709,125

646,580

694,949

115,570

2,383

4,168,607

Total loans
$
2,871,929

$
646,580

$
730,471

$
116,546

$
2,383

$
4,367,909