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PROPERTY AND EQUIPMENT, NET (Tables)
 12 Months Ended
Dec. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net
Property and equipment, net consisted of the following at December 31 (in thousands):
 
2017
 
2016
Equipment
$
30,411

 
$
31,426

Purchased software
10,028

 
11,781

Furniture and fixtures
5,669

 
5,468

Leasehold improvements
2,249

 
2,073

 
48,357

 
50,748

Less accumulated depreciation
(38,051
)
 
(41,022
)
Property and equipment, net
$
10,306

 
$
9,726