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Goodwill And Intangible Assets
12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill And Intangible Assets
Goodwill and Intangible Assets
 
The changes in the carrying amount of goodwill for the years ended December 31, 2015 and 2016 is as follows (in thousands):
Balance at December 31, 2015
$
157,109

Additions: ADP CHSA/COBRA Business acquisition (see Note 3)
140,300

Balance at December 31, 2016
$
297,409


 
Acquired intangible assets at December 31, 2015 and December 31, 2016 were comprised of the following (in thousands):
 
 
December 31, 2015
 
December 31, 2016
 
Gross
carrying
amount
 
Accumulated
amortization
 
Net
 
Gross
carrying
amount
 
Accumulated
amortization
 
Net
Amortizable intangible assets:
 
 
 
 
 
 
 
 
 
 
 
Client contracts and broker relationships
$
124,261

 
$
47,013

 
$
77,248

 
$
232,560

 
$
60,569

 
$
171,991

Trade names
3,880

 
2,405

 
1,475

 
3,880

 
3,078

 
802

Technology
13,846

 
11,039

 
2,807

 
14,646

 
11,867

 
2,779

Noncompete agreements
2,232

 
1,870

 
362

 
2,232

 
1,941

 
291

Favorable lease
1,136

 
412

 
724

 
1,136

 
510

 
626

Total
$
145,355

 
$
62,739

 
$
82,616

 
$
254,454

 
$
77,965

 
$
176,489


 
Included in the gross carrying amount in client contracts and broker relationships intangible assets as of December 31, 2016 are the additions of $20.9 million and $93.9 million related to the channel partner arrangement with Ceridian and the acquisition of ADP CHSA/COBRA Business, respectively. Amortization expense of intangible assets totaled $11.8 million, $15.7 million and $21.9 million in 2014, 2015 and 2016, respectively.
 
The estimated expected amortization expense in future periods at December 31, 2016 is as follows (in thousands)
2017
$
25,629

2018
24,966

2019
24,043

2020
22,059

2021
19,255

Thereafter
60,537

Total
$
176,489