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INTANGIBLE ASSETS (Tables)
12 Months Ended
Dec. 31, 2019
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of acquired finite-lived intangible assets by major class

Intangible assets consist of the following (in thousands, except amortization period data):
 
 
December 31,
 
Weighted- Average
Amortization Period
(in years)
 
2019
 
2018
 
Acquired technology and data
105,168

 
103,128

 
5
Accumulated amortization
(90,542
)
 
(85,344
)
 
 
Acquired technology, net
14,626

 
17,784

 
 
 
 
 
 
 
 
Acquired customer base
487,532

 
339,574

 
11
Accumulated amortization
(233,202
)
 
(199,405
)
 
 
Acquired customer base, net
254,330

 
140,169

 
 
 
 
 
 
 
 
Acquired trade names and other intangible assets
236,358

 
199,752

 
12
Accumulated amortization
(84,118
)
 
(68,794
)
 
 
Acquired trade names and other intangible assets, net
152,240

 
130,958

 
 
 
 
 
 
 
 
Intangible assets, net
$
421,196

 
$
288,911