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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Tables)
9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Changes in Goodwill and Intangible Assets
The following table summarizes the changes in the Company’s goodwill and other intangibles for the nine months ended September 30, 2016 and the year ended December 31, 2015 (in thousands):
 
Goodwill
 
CDI
 
Favorable LHI
 
Total
Balance, December 31, 2014
$

 
$
2,831

 
$

 
$
2,831

Additions through acquisitions
247,738

 
37,395

 
776

 
285,909

Amortization

 
(3,164
)
 
(66
)
 
(3,230
)
Other changes (1)

 
(300
)
 

 
(300
)
Balance, December 31, 2015
247,738

 
36,762

 
710

 
285,210

Amortization

 
(5,339
)
 
(199
)
 
(5,538
)
Adjustments to goodwill
(3,155
)
 

 

 
(3,155
)
Balance, September 30, 2016
$
244,583

 
$
31,423

 
$
511

 
$
276,517


(1) 
Acquired CDI from AmericanWest was adjusted for a branch that was subsequently sold.

Schedule of Estimated Annual Amortization Expense
The following table presents the estimated amortization expense with respect to CDI for the periods indicated (in thousands):
 
 
Estimated Amortization
Remainder of 2016
 
$
1,722

2017
 
6,332

2018
 
5,609

2019
 
4,889

2020
 
4,169

Thereafter
 
8,702

 
 
$
31,423

Schedule of Servicing Assets at Amortized Value
An analysis of our mortgage servicing rights for the three and nine months ended September 30, 2016 and 2015 is presented below (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2016
 
2015
 
2016
 
2015
Balance, beginning of the period
$
14,276

 
$
12,329

 
$
13,354

 
$
9,030

Additions—amounts capitalized
1,652

 
1,360

 
4,371

 
4,052

Additions—acquired through business combinations

 

 

 
2,172

Amortization (1)
(1,102
)
 
(810
)
 
(2,899
)
 
(2,375
)
Balance, end of the period (2)
$
14,826

 
$
12,879

 
$
14,826

 
$
12,879


(1) 
Amortization of mortgage servicing rights is recorded as a reduction of loan servicing income and any unamortized balance is fully amortized if the loan repays in full.
(2) 
There was no valuation allowance as of September 30, 2016 and 2015.