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Goodwill and other intangible assets
9 Months Ended
Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and other intangible assets
Goodwill and other intangible assets

At close of business on August 1, 2016, the Company completed the PPFS acquisition. The Company recorded $2.2 million of goodwill in connection with the PPFS acquisition.

On March 4, 2016, the Bank completed the branch acquisition. The Company recorded $4.0 million of goodwill in connection with the branch acquisition.

The Company recorded $78.6 million of goodwill in connection with the acquisition of Home in 2014. In accordance with the Intangibles - Goodwill and Other topic of the Financial Accounting Standards Board (“FASB”) ASC, goodwill is not amortized but is reviewed for potential impairment at the reporting unit level. Management analyzes its goodwill for impairment on an annual basis and between annual tests in certain circumstances, such as upon material adverse changes in legal, business, regulatory and economic factors. An impairment loss is recorded to the extent that the carrying amount of goodwill exceeds its implied fair value. The Company performed an impairment assessment as of December 31, 2015 and concluded that there was no impairment to goodwill.

Core deposit intangibles (“CDI”) are evaluated for impairment if events and circumstances indicate a possible impairment. The CDI are amortized on a straight-line basis over an estimated life of 10 years. The following table sets forth activity for CDI for the three and nine months ended September 30, 2016 and 2015 (dollars in thousands).
 
Three months ended September 30,
 
Nine months ended  
September 30,
 
2016
 
2015
 
2016
 
2015
Gross CDI balance, beginning of period
$
14,623

 
$
8,196

 
$
8,196

 
$
8,196

Accumulated amortization, beginning of period
(1,903
)
 
(923
)
 
(1,333
)
 
(513
)
CDI, net, beginning of period
12,720

 
7,273

 
6,863

 
7,683

Established through acquisitions
342

 

 
6,770

 

CDI current period amortization
(371
)
 
(205
)
 
(942
)
 
(615
)
Total CDI, end of period
$
12,691

 
$
7,068

 
$
12,691

 
$
7,068



The following table provides the estimated future amortization expense of CDI for the remaining period ending December 31, 2016 and the succeeding four years (dollars in thousands):

Years Ending December 31,
 
 
2016
 
$
374

2017
 
1,497

2018
 
1,497

2019
 
1,497

2020
 
1,497