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INTANGIBLE ASSETS
 12 Months Ended
Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Disclosure [Text Block]
NOTE 8:-
INTANGIBLE ASSETS
 
a.
Intangible assets:
   
 
 
December 31,
 
 
 
2015
 
2016
 
Original amounts:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Capitalized software costs
 
$
67,106
 
$
71,349
 
Customer relationships
 
 
31,936
 
 
53,370
 
Backlog and non-compete agreement
 
 
2,371
 
 
2,712
 
Acquired technology
 
 
5,075
 
 
12,375
 
 
 
 
 
 
 
 
 
 
 
 
106,488
 
 
139,806
 
Accumulated amortization:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Capitalized software costs
 
 
53,096
 
 
57,286
 
Customer relationships
 
 
16,336
 
 
21,684
 
Backlog and non-compete agreement
 
 
2,039
 
 
2,260
 
Acquired technology
 
 
1,442
 
 
2,396
 
 
 
 
 
 
 
 
 
 
 
 
72,913
 
 
83,626
 
 
 
 
 
 
 
 
 
Intangible assets, net
 
$
33,575
 
$
56,180
 
   
b.
Amortization expenses amounted to $ 7,919, $ 9,093 and $ 10,715 for the years ended December 31, 2014, 2015 and 2016, respectively.
 
c.
The estimated future amortization expense of intangible assets as of December 31, 2016 is as follows:
 
2017
 
$
11,843
 
2018
 
 
9,844
 
2019
 
 
8,110
 
2020
 
 
6,691
 
2021
 
 
5,118
 
2022 and thereafter
 
 
14,574
 
 
 
 
 
 
 
 
$
56,180