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GOODWILL, OTHER INTANGIBLE ASSETS AND MORTGAGE SERVICING RIGHTS (Tables)
 9 Months Ended
Sep. 30, 2017
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, 2017 and the year ended December 31, 2016 (in thousands):
 
Goodwill
 
CDI
 
Favorable LHI
 
Total
Balance, December 31, 2015
$
247,738

 
$
36,762

 
$
710

 
$
285,210

Amortization
—

 
(7,061
)
 
(249
)
 
(7,310
)
Adjustments to goodwill
(3,155
)
 
—

 
—

 
(3,155
)
Balance, December 31, 2016
244,583

 
29,701

 
461

 
274,745

Amortization
—

 
(4,790
)
 
(153
)
 
(4,943
)
Balance, September 30, 2017
$
244,583

 
$
24,911

 
$
308

 
$
269,802
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 2017
 
$
1,542

2018
 
5,609

2019
 
4,889

2020
 
4,169

2021
 
3,448

Thereafter
 
5,254

 
 
$
24,911
Schedule of Servicing Assets at Amortized Value
An analysis of our mortgage servicing rights for the three and nine months ended September 30, 2017 and 2016 is presented below (in thousands):
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
 
2017
 
2016
 
2017
 
2016
Balance, beginning of the period
$
14,985

 
$
14,276

 
$
15,249

 
$
13,354

Additions—amounts capitalized
826

 
1,652

 
2,477

 
4,371

Amortization (1)
(1,057
)
 
(1,102
)
 
(2,972
)
 
(2,899
)
Balance, end of the period (2)
$
14,754

 
$
14,826

 
$
14,754

 
$
14,826


(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, 2017 and 2016.