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Allowance For Loan Losses
3 Months Ended
Mar. 31, 2017
Receivables [Abstract]  
Allowance For Loan Losses
The following tables present a summary of changes in the allowance for loan losses by portfolio segment for the periods indicated: 
Three Months Ended March 31, 2017
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
28,625

$
7,711

$
38,092

$
1,786

$

$
76,214

Provision charged to operating expense
4,387

2,048

(4,128
)
(577
)

1,730

Less loans charged-off
(444
)
(2,596
)
(793
)
(22
)

(3,855
)
Add back recoveries of loans previously
   charged-off
524

1,205

391

22


2,142

Ending balance
$
33,092

$
8,368

$
33,562

$
1,209

$

$
76,231

 
 
 
 
 
 
 
As of March 31, 2017
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Loans individually evaluated for impairment
$
8,066

$

$
7,176

$
223

$

$
15,465

Loans collectively evaluated for impairment
25,026

8,368

26,386

986


60,766

Allowance for loan losses
$
33,092

$
8,368

$
33,562

$
1,209

$

$
76,231

 
 
 
 
 
 
 
Loans held for investment:
 
 
 
 
 
 
Individually evaluated for impairment
$
63,512

$

$
33,079

$
1,155

$

$
97,746

Collectively evaluated for impairment
3,393,354

973,161

784,762

124,337

3,182

5,278,796

Total loans
$
3,456,866

$
973,161

$
817,841

$
125,492

$
3,182

$
5,376,542

Three Months Ended March 31, 2016
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 

 

 

 

 

 

Beginning balance
$
52,296

$
5,144

$
18,775

$
602

$

$
76,817

Provision charged to operating expense
(16,081
)
1,229

17,690

1,162


4,000

Less loans charged-off
(1,922
)
(1,892
)
(488
)


(4,302
)
Add back recoveries of loans previously
   charged-off
2,359

775

275



3,409

Ending balance
$
36,652

$
5,256

$
36,252

$
1,764

$

$
79,924

As of December 31, 2016
Real Estate

Consumer

Commercial

Agriculture

Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Loans individually evaluated for impairment
$
4,588

$

$
9,254

$
112

$

$
13,954

Loans collectively evaluated for impairment
24,037

7,711

28,838

1,674


62,260

Allowance for loan losses
$
28,625

$
7,711

$
38,092

$
1,786

$

$
76,214

 
 
 
 
 
 
 
Loans held for investment:
 

 

 

 

 

 

Individually evaluated for impairment
$
68,632

$

$
32,397

$
3,662

$

$
104,691

Collectively evaluated for impairment
3,445,451

970,266

765,545

129,196

1,601

5,312,059

Total loans
$
3,514,083

$
970,266

$
797,942

$
132,858

$
1,601

$
5,416,750


    
The Company performs a quarterly assessment of the adequacy of its allowance for loan losses in accordance with generally accepted accounting principles. The methodology used to assess the adequacy is consistently applied to the Company's loan portfolio and consists of three elements: (1) specific valuation allowances based on probable losses on impaired loans; (2) historical valuation allowances based on loan loss experience for similar loans with similar characteristics and trends; and (3) general valuation allowances determined based on changes in the nature of the loan portfolio, overall portfolio quality, industry concentrations, delinquency trends, general economic conditions and other qualitative risk factors both internal and external to the Company.
    
Specific allowances are established for loans where management has determined that probability of a loss exists by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies and any relevant qualitative or economic factors impacting the loan. Historical valuation allowances are determined by applying percentage loss factors to the credit exposures from outstanding loans. For commercial, agricultural and real estate loans, loss factors are applied based on the internal risk classifications of these loans. For consumer loans, loss factors are applied on a portfolio basis. For commercial, agriculture and real estate loans, loss factor percentages are based on a migration analysis of our historical loss experience, designed to account for credit deterioration. For consumer loans, loss factor percentages are based on a one-year loss history. General valuation allowances are determined by evaluating, on a quarterly basis, changes in the nature and volume of the loan portfolio, overall portfolio quality, industry concentrations, current economic and regulatory conditions and the estimated impact of these factors on historical loss rates.    

An allowance for loan losses is established for loans acquired credit impaired and for which the Company projects a decrease in the expected cash flows in periods subsequent to the acquisition of such loans. As of March 31, 2017 and December 31, 2016, the Company's allowance for loan losses included $565 and $427, respectively, related to loans acquired credit impaired.