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Allowance for Loan Losses (Tables)
9 Months Ended
Sep. 30, 2018
Receivables [Abstract]  
Schedule of Allowance for Loan Losses by Portfolio Segment
The following tables present a summary of changes in the allowance for loan losses by portfolio segment for the periods indicated: 
Three Months Ended September 30, 2018
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
33.9

$
7.8

$
30.6

$
1.8

$

$
74.1

Provision charged to operating expense
(0.9
)
2.4

0.5



2.0

Less loans charged-off
(0.7
)
(3.0
)
(1.1
)


(4.8
)
Add back recoveries of loans previously
   charged-off
0.6

1.2

0.5



2.3

Ending balance
$
32.9

$
8.4

$
30.5

$
1.8

$

$
73.6

 
 
 
 
 
 
 
Nine Months Ended September 30, 2018
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Beginning balance
$
31.6

$
8.7

$
30.6

$
1.2

$

$
72.1

Provision charged to operating expense
1.4

4.7

0.5

0.4


7.0

Less loans charged-off
(2.8
)
(8.6
)
(3.7
)


(15.1
)
Add back recoveries of loans previously
   charged-off
2.7

3.6

3.1

0.2


9.6

Ending balance
$
32.9

$
8.4

$
30.5

$
1.8

$

$
73.6

 
 
 
 
 
 
 
As of September 30, 2018
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Loans individually evaluated for impairment
$
3.6

$

$
4.4

$
0.2

$

$
8.2

Loans collectively evaluated for impairment
29.3

8.4

26.1

1.6


65.4

Allowance for loan losses
$
32.9

$
8.4

$
30.5

$
1.8

$

$
73.6

 
 
 
 
 
 
 
As of September 30, 2018
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Loans held for investment:
 
 
 
 
 
 
Individually evaluated for impairment
$
49.8

$

$
20.4

$
2.2

$

$
72.4

Collectively evaluated for impairment
5,747.0

1,078.3

1,316.8

262.6

3.2

8,407.9

Total loans held for investment
$
5,796.8

$
1,078.3

$
1,337.2

$
264.8

$
3.2

$
8,480.3

Three Months Ended September 30, 2017
Real Estate
Consumer
Commercial
Agriculture
Other
Total
Allowance for loan losses:
 

 

 

 

 

 

Beginning balance
$
33.5

$
7.6

$
33.1

$
1.5

$

$
75.7

Provision charged to operating expense
(0.7
)
2.6

1.5



3.4

Less loans charged-off
(1.7
)
(3.1
)
(2.6
)


(7.4
)
Add back recoveries of loans previously
   charged-off
0.6

1.0

1.3



2.9

Ending balance
$
31.7

$
8.1

$
33.3

$
1.5

$

$
74.6

Nine Months Ended September 30, 2017
Real Estate

Consumer

Commercial

Agriculture

Other

Total

Allowance for loan losses:
 

 

 

 

 

 

Beginning balance
$
28.6

$
7.7

$
38.1

$
1.8

$

$
76.2

Provision charged to operating expense
4.8

5.2

(2.2
)
(0.3
)

7.5

Less loans charged-off
(3.0
)
(8.1
)
(4.5
)
(0.1
)

(15.7
)
Add back recoveries of loans previously
   charged-off
1.3

3.3

1.9

0.1


6.6

Ending balance
$
31.7

$
8.1

$
33.3

$
1.5

$

$
74.6

 
 
 
 
 
 
 
As of December 31, 2017
Real Estate

Consumer

Commercial

Agriculture

Other
Total
Allowance for loan losses:
 
 
 
 
 
 
Loans individually evaluated for impairment
$
6.2

$

$
4.4

$
0.2

$

$
10.8

Loans collectively evaluated for impairment
25.4

8.7

26.2

1.0


61.3

Allowance for loan losses
$
31.6

$
8.7

$
30.6

$
1.2

$

$
72.1

 
 
 
 
 
 
 
As of December 31, 2017
Real Estate

Consumer

Commercial

Agriculture

Other

Total

Loans held for investment:
 

 

 

 

 

 

Individually evaluated for impairment
$
58.3

$

$
23.8

$
1.1

$

$
83.2

Collectively evaluated for impairment
5,118.5

1,034.4

1,191.6

135.1

4.9

7,484.5

Total loans held for investment
$
5,176.8

$
1,034.4

$
1,215.4

$
136.2

$
4.9

$
7,567.7